{"id":5735,"date":"2026-07-07T16:39:44","date_gmt":"2026-07-07T14:39:44","guid":{"rendered":"https:\/\/www.agora-detectives.com\/le-client-mystere-un-outil-efficace-pour-comprendre-une-baisse-de-chiffre-daffaires\/"},"modified":"2026-07-16T17:02:10","modified_gmt":"2026-07-16T15:02:10","slug":"the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover","status":"publish","type":"post","link":"https:\/\/www.agora-detectives.com\/en\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\/","title":{"rendered":"The Mystery Shopper: An Effective Tool for Understanding a Decline in Turnover"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"5735\" class=\"elementor elementor-5735 elementor-5722\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<article data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-4c5f536 actu-content elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4c5f536\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2d3702c page-contenu__content\" data-id=\"2d3702c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9b0f730 elementor-widget elementor-widget-text-editor\" data-id=\"9b0f730\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>You own several shops, <a href=\"https:\/\/www.agora-detectives.com\/en\/companies\/business-partner\/investigation-on-franchises-compliances\/\">franchises<\/a> or retail outlets. They all offer the same products, the same services and benefit from the same promotional campaigns. Yet one of your establishments is consistently performing significantly worse than the others.<\/p><p>You discuss the situation with the manager on site, analyse the figures and look for explanations, but no clear answer emerges to explain the difference in performance.<\/p><p>In this type of situation, the intervention of a private investigator acting as a <strong>mystery shopper<\/strong> can quickly identify the underlying causes of the problem.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fa4ca1b elementor-widget elementor-widget-heading\" data-id=\"fa4ca1b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What is a Mystery Shopper?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ccb7654 elementor-widget elementor-widget-text-editor\" data-id=\"ccb7654\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>A <a href=\"https:\/\/www.agora-detectives.com\/en\/companies\/competition\/secret-shopper\/\">mystery shopper<\/a> is a person who visits a business or retail outlet posing as an ordinary customer, without revealing their true purpose.<\/p><p>The objective is simple: to observe, in a neutral and objective manner, how the business actually operates. The mystery shopper assesses various aspects, including customer service, adherence to opening hours, the quality of advice provided, staff professionalism and compliance with procedures established by management.<\/p><p>Unlike an announced inspection or a visit from senior management, a mystery shopper observes the real conditions under which customers are welcomed on a day-to-day basis.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c664c6 elementor-widget elementor-widget-heading\" data-id=\"6c664c6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How Does a Mystery Shopper Investigation Work in Practice?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4110736 elementor-widget elementor-widget-text-editor\" data-id=\"4110736\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Every assignment begins with a discussion with the business owner or manager in order to understand the issues being faced and the concerns that have arisen.<\/p><p>The private investigator then develops an action plan tailored to the situation. This may involve site visits, discreet observations, simulated purchases or requests for information.<\/p><p>At the conclusion of the investigation, a detailed report is provided to the client. The report sets out the facts observed in an objective and factual manner, without judgement or interpretation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1b035aa elementor-widget elementor-widget-image\" data-id=\"1b035aa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/www.agora-detectives.com\/wp-content\/uploads\/2026\/07\/enquete-client-mystere.jpg\" class=\"attachment-large size-large wp-image-5728\" alt=\"Enqu\u00eate d&apos;un client myst\u00e8re\" srcset=\"https:\/\/www.agora-detectives.com\/wp-content\/uploads\/2026\/07\/enquete-client-mystere.jpg 800w, https:\/\/www.agora-detectives.com\/wp-content\/uploads\/2026\/07\/enquete-client-mystere-300x200.jpg 300w, https:\/\/www.agora-detectives.com\/wp-content\/uploads\/2026\/07\/enquete-client-mystere-768x512.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-23f74ff elementor-widget elementor-widget-heading\" data-id=\"23f74ff\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">A Real Case Handled by Our Agency<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dceab33 elementor-widget elementor-widget-text-editor\" data-id=\"dceab33\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>We were recently instructed by the owner of two shoe shops located outside a major city.<\/p><p>Both stores offered exactly the same products, the same brands and the same promotional campaigns. However, one of the shops had been experiencing a significant decline in turnover for several months.<\/p><p>The owner had already discussed the situation with the manager of the underperforming store. Despite several meetings, no satisfactory explanation had been provided.<\/p><p>We were therefore instructed to act as mystery shoppers.<\/p><h3>Failure to Comply with Opening Hours<\/h3><p>During our first visit, we discovered that the shop was closed despite being scheduled to be open to the public.<\/p><p>A sign on the door simply stated: &#8220;<em>Back in one hour.<\/em>&#8220;<\/p><p>This immediately raised concerns.<\/p><p>In order to determine whether this was an isolated incident or a regular occurrence, we carried out several unannounced visits on different days.<\/p><p>Our observations revealed that these temporary closures were frequent and that opening hours were regularly altered without management being informed.<\/p><p>Naturally, when a shop is closed during advertised business hours, customers either take their business elsewhere or postpone their purchases.<\/p><h3>A Poor Customer Experience<\/h3><p>We then carried out several simulated purchases to assess the quality of customer service and sales advice provided.<\/p><p>Our findings revealed additional shortcomings:<\/p><ul><li>an unwelcoming attitude towards customers;<\/li><li>poor listening skills and limited understanding of customer needs;<\/li><li>inaccurate or unsuitable advice;<\/li><li>a lack of engagement in the sales process.<\/li><\/ul><p>All of these factors can have a direct impact on sales performance and customer loyalty.<\/p><h3>Objective Findings to Enable Effective Action<\/h3><p>All of our observations were documented in a detailed report submitted to the business owner.<\/p><p>Armed with this factual information, the owner was able to implement corrective measures, improve supervision of the store and provide additional training to staff in the areas identified.<\/p><p>A few months later, the results were clear: customer footfall had increased and the store&#8217;s turnover had begun to recover.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b2e0caa elementor-widget elementor-widget-heading\" data-id=\"b2e0caa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Why Instruct a Private Investigator?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b1adfa9 elementor-widget elementor-widget-text-editor\" data-id=\"b1adfa9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>When a business experiences unexplained difficulties, it can be challenging for an owner or director to obtain an objective understanding of the situation.<\/p><p>A private investigator acting as a mystery shopper provides an independent, impartial and discreet perspective. The aim is not to sanction staff but to identify facts that enable business owners to make informed decisions.<\/p><p>Across many sectors, including retail, hospitality, catering, service industries and franchise networks, this approach is a highly effective way of identifying operational issues and improving service quality over the long term.<br \/><br \/>If you would like further information about our mystery shopper services or any other private investigation matter, please do not hesitate to contact us.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ea22e3c elementor-align-left elementor-widget elementor-widget-button\" data-id=\"ea22e3c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"\/en\/contact\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Request a free quote<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/article>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>You own several shops, franchises or retail outlets. They all offer the same products, the same services and benefit from the same promotional campaigns. Yet one of your establishments is consistently performing significantly worse than the others. You discuss the situation with the manager on site, analyse the figures and look for explanations, but no [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":5725,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[19],"tags":[],"class_list":["post-5735","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-companies"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The Mystery Shopper: An Effective Tool for Understanding a Decline in Turnover | Agora D\u00e9tectives<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.agora-detectives.com\/en\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The Mystery Shopper: An Effective Tool for Understanding a Decline in Turnover | Agora D\u00e9tectives\" \/>\n<meta property=\"og:description\" content=\"You own several shops, franchises or retail outlets. They all offer the same products, the same services and benefit from the same promotional campaigns. Yet one of your establishments is consistently performing significantly worse than the others. You discuss the situation with the manager on site, analyse the figures and look for explanations, but no [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.agora-detectives.com\/en\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\/\" \/>\n<meta property=\"og:site_name\" content=\"Agora D\u00e9tectives\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/agenceagoradetectives\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-07T14:39:44+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-16T15:02:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.agora-detectives.com\/wp-content\/uploads\/2026\/07\/client-mystere-chiffre-affaire.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"533\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Agora\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@agoradetectives\" \/>\n<meta name=\"twitter:site\" content=\"@agoradetectives\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Agora\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\\\/\"},\"author\":{\"name\":\"Agora\",\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/#\\\/schema\\\/person\\\/1888ae728146e828f3c7d40cdf9b7017\"},\"headline\":\"The Mystery Shopper: An Effective Tool for Understanding a Decline in Turnover\",\"datePublished\":\"2026-07-07T14:39:44+00:00\",\"dateModified\":\"2026-07-16T15:02:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\\\/\"},\"wordCount\":739,\"publisher\":{\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.agora-detectives.com\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/client-mystere-chiffre-affaire.jpg\",\"articleSection\":[\"Companies\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\\\/\",\"url\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\\\/\",\"name\":\"The Mystery Shopper: An Effective Tool for Understanding a Decline in Turnover | Agora D\u00e9tectives\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.agora-detectives.com\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/client-mystere-chiffre-affaire.jpg\",\"datePublished\":\"2026-07-07T14:39:44+00:00\",\"dateModified\":\"2026-07-16T15:02:10+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.agora-detectives.com\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/client-mystere-chiffre-affaire.jpg\",\"contentUrl\":\"https:\\\/\\\/www.agora-detectives.com\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/client-mystere-chiffre-affaire.jpg\",\"width\":800,\"height\":533,\"caption\":\"Faire appel \u00e0 un client myst\u00e8re\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"The Mystery Shopper: An Effective Tool for Understanding a Decline in Turnover\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/\",\"name\":\"Agora D\u00e9tectives\",\"description\":\"Agence de d\u00e9tectives priv\u00e9s \u00e0 Paris\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/#organization\",\"name\":\"Agora D\u00e9tectives\",\"alternateName\":\"Agence de d\u00e9tectives priv\u00e9s \u00e0 Paris\",\"url\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.agora-detectives.com\\\/wp-content\\\/uploads\\\/2022\\\/06\\\/agora-detectives-logo-1.png\",\"contentUrl\":\"https:\\\/\\\/www.agora-detectives.com\\\/wp-content\\\/uploads\\\/2022\\\/06\\\/agora-detectives-logo-1.png\",\"width\":400,\"height\":123,\"caption\":\"Agora D\u00e9tectives\"},\"image\":{\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/agenceagoradetectives\",\"https:\\\/\\\/x.com\\\/agoradetectives\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.agora-detectives.com\\\/en\\\/#\\\/schema\\\/person\\\/1888ae728146e828f3c7d40cdf9b7017\",\"name\":\"Agora\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"The Mystery Shopper: An Effective Tool for Understanding a Decline in Turnover | Agora D\u00e9tectives","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.agora-detectives.com\/en\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\/","og_locale":"en_US","og_type":"article","og_title":"The Mystery Shopper: An Effective Tool for Understanding a Decline in Turnover | Agora D\u00e9tectives","og_description":"You own several shops, franchises or retail outlets. They all offer the same products, the same services and benefit from the same promotional campaigns. Yet one of your establishments is consistently performing significantly worse than the others. You discuss the situation with the manager on site, analyse the figures and look for explanations, but no [&hellip;]","og_url":"https:\/\/www.agora-detectives.com\/en\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\/","og_site_name":"Agora D\u00e9tectives","article_publisher":"https:\/\/www.facebook.com\/agenceagoradetectives","article_published_time":"2026-07-07T14:39:44+00:00","article_modified_time":"2026-07-16T15:02:10+00:00","og_image":[{"width":800,"height":533,"url":"https:\/\/www.agora-detectives.com\/wp-content\/uploads\/2026\/07\/client-mystere-chiffre-affaire.jpg","type":"image\/jpeg"}],"author":"Agora","twitter_card":"summary_large_image","twitter_creator":"@agoradetectives","twitter_site":"@agoradetectives","twitter_misc":{"Written by":"Agora","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.agora-detectives.com\/en\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\/#article","isPartOf":{"@id":"https:\/\/www.agora-detectives.com\/en\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\/"},"author":{"name":"Agora","@id":"https:\/\/www.agora-detectives.com\/en\/#\/schema\/person\/1888ae728146e828f3c7d40cdf9b7017"},"headline":"The Mystery Shopper: An Effective Tool for Understanding a Decline in Turnover","datePublished":"2026-07-07T14:39:44+00:00","dateModified":"2026-07-16T15:02:10+00:00","mainEntityOfPage":{"@id":"https:\/\/www.agora-detectives.com\/en\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\/"},"wordCount":739,"publisher":{"@id":"https:\/\/www.agora-detectives.com\/en\/#organization"},"image":{"@id":"https:\/\/www.agora-detectives.com\/en\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\/#primaryimage"},"thumbnailUrl":"https:\/\/www.agora-detectives.com\/wp-content\/uploads\/2026\/07\/client-mystere-chiffre-affaire.jpg","articleSection":["Companies"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.agora-detectives.com\/en\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\/","url":"https:\/\/www.agora-detectives.com\/en\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\/","name":"The Mystery Shopper: An Effective Tool for Understanding a Decline in Turnover | Agora D\u00e9tectives","isPartOf":{"@id":"https:\/\/www.agora-detectives.com\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.agora-detectives.com\/en\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\/#primaryimage"},"image":{"@id":"https:\/\/www.agora-detectives.com\/en\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\/#primaryimage"},"thumbnailUrl":"https:\/\/www.agora-detectives.com\/wp-content\/uploads\/2026\/07\/client-mystere-chiffre-affaire.jpg","datePublished":"2026-07-07T14:39:44+00:00","dateModified":"2026-07-16T15:02:10+00:00","breadcrumb":{"@id":"https:\/\/www.agora-detectives.com\/en\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.agora-detectives.com\/en\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.agora-detectives.com\/en\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\/#primaryimage","url":"https:\/\/www.agora-detectives.com\/wp-content\/uploads\/2026\/07\/client-mystere-chiffre-affaire.jpg","contentUrl":"https:\/\/www.agora-detectives.com\/wp-content\/uploads\/2026\/07\/client-mystere-chiffre-affaire.jpg","width":800,"height":533,"caption":"Faire appel \u00e0 un client myst\u00e8re"},{"@type":"BreadcrumbList","@id":"https:\/\/www.agora-detectives.com\/en\/the-mystery-shopper-an-effective-tool-for-understanding-a-decline-in-turnover\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/www.agora-detectives.com\/en\/"},{"@type":"ListItem","position":2,"name":"The Mystery Shopper: An Effective Tool for Understanding a Decline in Turnover"}]},{"@type":"WebSite","@id":"https:\/\/www.agora-detectives.com\/en\/#website","url":"https:\/\/www.agora-detectives.com\/en\/","name":"Agora D\u00e9tectives","description":"Agence de d\u00e9tectives priv\u00e9s \u00e0 Paris","publisher":{"@id":"https:\/\/www.agora-detectives.com\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.agora-detectives.com\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.agora-detectives.com\/en\/#organization","name":"Agora D\u00e9tectives","alternateName":"Agence de d\u00e9tectives priv\u00e9s \u00e0 Paris","url":"https:\/\/www.agora-detectives.com\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.agora-detectives.com\/en\/#\/schema\/logo\/image\/","url":"https:\/\/www.agora-detectives.com\/wp-content\/uploads\/2022\/06\/agora-detectives-logo-1.png","contentUrl":"https:\/\/www.agora-detectives.com\/wp-content\/uploads\/2022\/06\/agora-detectives-logo-1.png","width":400,"height":123,"caption":"Agora D\u00e9tectives"},"image":{"@id":"https:\/\/www.agora-detectives.com\/en\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/agenceagoradetectives","https:\/\/x.com\/agoradetectives"]},{"@type":"Person","@id":"https:\/\/www.agora-detectives.com\/en\/#\/schema\/person\/1888ae728146e828f3c7d40cdf9b7017","name":"Agora"}]}},"_links":{"self":[{"href":"https:\/\/www.agora-detectives.com\/en\/wp-json\/wp\/v2\/posts\/5735","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.agora-detectives.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.agora-detectives.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.agora-detectives.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.agora-detectives.com\/en\/wp-json\/wp\/v2\/comments?post=5735"}],"version-history":[{"count":4,"href":"https:\/\/www.agora-detectives.com\/en\/wp-json\/wp\/v2\/posts\/5735\/revisions"}],"predecessor-version":[{"id":5740,"href":"https:\/\/www.agora-detectives.com\/en\/wp-json\/wp\/v2\/posts\/5735\/revisions\/5740"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.agora-detectives.com\/en\/wp-json\/wp\/v2\/media\/5725"}],"wp:attachment":[{"href":"https:\/\/www.agora-detectives.com\/en\/wp-json\/wp\/v2\/media?parent=5735"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.agora-detectives.com\/en\/wp-json\/wp\/v2\/categories?post=5735"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.agora-detectives.com\/en\/wp-json\/wp\/v2\/tags?post=5735"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}