| Mystery Diners | Tastes Like Chicken: After hearing rumours that customers are being served meat at his vegan restaurant, Mitch, owner of Source contacts Charles Stiles for help. (S5 Ep2) | Sat, Sep 23, 9:30 PM | Food Network | 30 mins |
| Mystery Diners | Fired Up: The owner of Looney's BBQ calls the Mystery Diners crew to investigate if his staff is pranking their customers with extremely hot sauce. (S5 Ep1) | Sat, Sep 23, 9:00 PM | Food Network | 30 mins |
| Mystery Diners | Hot Meat: Tony, owner of the Rivoli's, believes his new meat purveyor is selling him stolen goods. Charles sends in a Mystery Diner, who has trouble infiltrating the staff. (S11 Ep10) | Sat, Sep 23, 2:30 AM | Food Network | 30 mins |
| Mystery Diners | Lobster Looting: Brother-sister owners have noticed a discrepancy in their lobster supply at Langosta Lounge. With the help of Charles Stiles, they'll discover where the lobsters are going. (S11 Ep9) | Sat, Sep 23, 2:00 AM | Food Network | 30 mins |
| Mystery Diners | Wine on Wheels: Gary and Tony contact Charles after hearing rumours that employees are illegally selling alcohol to customers at their BYOB restaurant. (S4 Ep6) | Fri, Sep 22, 11:30 PM | Food Network | 30 mins |
| Mystery Diners | Too Many Cooks: After receiving numerous complaints about his new executive chef, Pascal, the owner of Bistro Bordeaux in Evanston contacts Charles to investigate. (S4 Ep5) | Fri, Sep 22, 11:00 PM | Food Network | 30 mins |
| Mystery Diners | Venue Vandals: Concerned about vandalism, the owner of the Spanish Potato Grill reaches out to Mystery Diners. The team learn that the restaurant is being sabotaged from the inside. (S11 Ep8) | Fri, Sep 22, 2:30 AM | Food Network | 30 mins |
| Mystery Diners | Vicious Valets: After hearing complaints about her valet service, the owner of Breuckelen Colony contacts the Mystery Diners for help. They discover an unauthorised car washing service. (S11 Ep7) | Fri, Sep 22, 2:00 AM | Food Network | 30 mins |
| Mystery Diners | While the Cat's Away: While recovering in Brazil from a paragliding accident, Kevin, owner of Gauchos Village in Glendale, notices a discrepancy in revenue and inventory at his restaurant. (S4 Ep4) | Thu, Sep 21, 11:30 PM | Food Network | 30 mins |
| Mystery Diners | Employee of the Month: When a lack of employee harmony threatens his restaurant, Vic, owner of Colombo's Italian Steakhouse in Eagle Rock, contacts Charles for help. (S4 Ep3) | Thu, Sep 21, 11:00 PM | Food Network | 30 mins |
| Mystery Diners | Comic Book Caper: Vlane, owner of Action Burger, contacts Mystery Diners to investigate missing comic books at his comic-themed restaurant, to find an employee abusing their powers for evil. (S11 Ep6) | Thu, Sep 21, 2:30 AM | Food Network | 30 mins |
| Mystery Diners | Unhappy Holidays: Nirav, owner of Smokin' Barrel, contacts Charles Stiles after noticing a decline in sales every holiday season. The Mystery Diners discover a suspicious sidewalk solicitor. (S11 Ep5) | Thu, Sep 21, 2:00 AM | Food Network | 30 mins |
| Mystery Diners | Chef's Choice: Patrick, owner of Buster's Beach House in Long Beach, calls Charles to investigate rumours that his executive chef is showing preferential treatment amongst the waiting staff. (S4 Ep1) | Wed, Sep 20, 11:30 PM | Food Network | 30 mins |
| Mystery Diners | Cooking the Books: Jamie and Francine, the owners of California's Sisley Italian Kitchen, believe their bookkeeper may be responsible for a revenue discrepancy, so Charles investigates. (S3 Ep13) | Wed, Sep 20, 11:00 PM | Food Network | 30 mins |
| Mystery Diners | Secondhand Scam: Luca asks Charles for help after his customers find food inside the factory-sealed appliances they just purchased. Mystery Diner Jamie discovers a large-scale operation. (S11 Ep4) | Wed, Sep 20, 2:30 AM | Food Network | 30 mins |
| Mystery Diners | Steals on Wheels: After receiving several customer complaints about her meal delivery service, Cynthia contacts the Mystery Diners for help. They uncover a bigger problem inside her kitchen. (S11 Ep3) | Wed, Sep 20, 2:00 AM | Food Network | 30 mins |
| Mystery Diners | Armed Services: After hearing complaints that his ex-military manager is being too strict, Keith, the owner of Buttons Restaurant in Texas, asks Charles to investigate. (S3 Ep12) | Tue, Sep 19, 11:30 PM | Food Network | 30 mins |
| Mystery Diners | Boss Hog: After noticing a drop in revenue at a Dallas restaurant, Charles sends in mystery diners Hollie and Justin who discover the problem may be related to a local motorcycle shop. (S3 Ep11) | Tue, Sep 19, 11:00 PM | Food Network | 30 mins |
| Mystery Diners | From Russia without Love: An aspiring restauranteur asks Charles to investigate his potential chef and business partner. The Mystery Diners go undercover and discover an elaborate con. (S11 Ep2) | Tue, Sep 19, 2:30 AM | Food Network | 30 mins |
| Mystery Diners | Street Vendor Violation: After a dip in sales, Freddy and Abdi of LA's Supperclub need help. The Mystery Diners discover that the staff is using a street vendor to line their pockets. (S11 Ep1) | Tue, Sep 19, 2:00 AM | Food Network | 30 mins |
| Mystery Diners | Menu Mayhem: When Francesco, owner of Zio Cecio in Dallas, starts hearing rave reviews about Tex-Mex food being served in his Italian restaurant, he calls in Charles to investigate. (S3 Ep10) | Mon, Sep 18, 11:30 PM | Food Network | 30 mins |
| Mystery Diners | Secret Sauce: After trying a barbecue sauce from a competing restaurant that tastes exactly like his, Terry, the owner of Cooper's Old Time Pit Barbecue calls Charles to investigate. (S3 Ep9) | Mon, Sep 18, 11:00 PM | Food Network | 30 mins |
| Mystery Diners | Three's a Crowd: Marvin contacts Charles to help investigate an ongoing feud between his girlfriend/manager and best friend/customer. Mystery Diners go undercover. (S4 Ep12) | Sun, Sep 17, 9:30 PM | Food Network | 30 mins |
| Mystery Diners | What a Drag: After hearing complaints from his cross-dressing customers that the weekly quiz night is rigged, Bob, owner of Venture Inn, suspects his manager is responsible. (S4 Ep11) | Sun, Sep 17, 9:00 PM | Food Network | 30 mins |
| Mystery Diners | Security Issues: After hearing complaints that their late night security guard is being too rough with customers, Dave and Mike Frank contact the Mystery Diners for help. (S4 Ep10) | Sat, Sep 16, 9:30 PM | Food Network | 30 mins |
| Mystery Diners | Throw Mumma from the Restaurant: When Tommy, owner of Gigi Restaurant, suspects that his mother/manager is discriminating against younger customers, he contacts Charles to investigate. (S4 Ep9) | Sat, Sep 16, 9:00 PM | Food Network | 30 mins |
| Mystery Diners | Drive-Thru Drama: Byron becomes suspicious when he notices a drop in customers at his restaurant. Charles sends in Kiel and Eliot, who uncover a problem with the drive-thru staff. (S10 Ep13) | Sat, Sep 16, 2:30 AM | Food Network | 30 mins |
| Mystery Diners | Skating on Thin Ice: After noticing missing food and merchandise, the owners of Epic Rollertainment in Murrieta, California, contact Charles for help. (S10 Ep12) | Sat, Sep 16, 2:00 AM | Food Network | 30 mins |
| Mystery Diners | Crazy Hearts: After hearing complaints about a bartender who brings wild animals into the restaurant for entertainment, AJ, the owner of Poppy's The Crazy Lobster calls Charles for help. (S3 Ep8) | Fri, Sep 15, 11:30 PM | Food Network | 30 mins |
| Mystery Diners | No Laughing Matter: Keith is concerned that his manager is more focused on his amateur comedy career than managing the restaurant. The Mystery Diners step in to investigate. (S3 Ep7) | Fri, Sep 15, 11:00 PM | Food Network | 30 mins |
| Mystery Diners | Tour Bust: Danny and his son Danny Jr own the Star Cafe and Star Coaches in Atlanta. They are concerned about missing food in their kitchen and a rise in fuel expenses on their tour buses. (S10 Ep11) | Fri, Sep 15, 2:30 AM | Food Network | 30 mins |
| Mystery Diners | Red Ink: Uche, owner of The Anchor Bar and Tattoo, contacts Charles after noticing a drop in food and tattoo sales. Mystery Diners go undercover to see if the two problems are related. (S10 Ep10) | Fri, Sep 15, 2:00 AM | Food Network | 30 mins |
| Mystery Diners | Friends with Benefits: After realising how hard it is to start a new restaurant, the husband and wife owners of N'awlins Cafe, in New Orleans, contact Charles for advice. (S3 Ep6) | Thu, Sep 14, 11:30 PM | Food Network | 30 mins |
| Mystery Diners | All in the Family: When UJ, owner of the family-run R&O's Restaurant in New Orleans, becomes fed up with the lack of respect he's receiving from his employees, he contacts Charles for help. (S3 Ep5) | Thu, Sep 14, 11:00 PM | Food Network | 30 mins |
| Mystery Diners | History Mystery: When Lee, owner of Old Vinings Inn hears rumours of unauthorised Civil War tours taking place inside his historical restaurant, he contacts Charles to investigate. (S10 Ep9) | Thu, Sep 14, 2:30 AM | Food Network | 30 mins |
| Mystery Diners | Missing Links: Charles discovers a bigger problem inside the dining room while investigating complaints about non-members playing for free at Emerald Hills Golf Course in Hollywood, Florida. (S10 Ep8) | Thu, Sep 14, 2:00 AM | Food Network | 30 mins |
| Mystery Diners | Catch of the Day: After noticing an unusually low haul in crab claws, Luis contacts Charles for help. Mystery diners Harry and Carlos discover where the seafood is going missing. (S3 Ep4) | Wed, Sep 13, 11:30 PM | Food Network | 30 mins |
| Mystery Diners | Party Monster: The owner of George's Restaurant wants both his customers and employees to have a good time. But when he notices a dramatic loss in revenue, he contacts Charles to investigate. (S3 Ep3) | Wed, Sep 13, 11:00 PM | Food Network | 30 mins |
| Mystery Diners | Unhappy Hour: Charles sends in Patrick and Tina to see how uninvited guests are gaining access to a free happy hour at Moreno's Cuba Cafe in Miami Beach, Florida. (S10 Ep7) | Wed, Sep 13, 2:30 AM | Food Network | 30 mins |
| Mystery Diners | Hamburger Burglar: Fearing their burger recipe is being given away, the owners of the Latin House contact Charles. Jamie and Estefanie find out if there are any moles inside their warehouse. (S10 Ep6) | Wed, Sep 13, 2:00 AM | Food Network | 30 mins |
| Mystery Diners | Cheese-Burglar: When Stephanie and D-Rock, owners of Cheeseburger Baby in Miami, notice a discrepancy in their register, they suspect an ex-convict employee is stealing from them. (S3 Ep2) | Tue, Sep 12, 11:30 PM | Food Network | 30 mins |
| Mystery Diners | Dining in the Dark: After receiving multiple complaints about theft and inappropriate touching during his monthly 'Dining in the Dark' event, owner Hernan contacts Charles for help. (S3 Ep1) | Tue, Sep 12, 11:00 PM | Food Network | 30 mins |
| Mystery Diners | Extracurricular Activities: Eliot and Domenica enroll as students at The Real Food Academy. They soon discover the classroom is being used for personal business by the instructors. (S10 Ep5) | Tue, Sep 12, 2:30 AM | Food Network | 30 mins |
| Mystery Diners | Backdoor Bootlegging: Rick, owner of Weiland Brewery, contacts Charles after noticing discrepancies in his beer supply. He discovers a large scale bootlegging operation is taking place. (S10 Ep4) | Tue, Sep 12, 2:00 AM | Food Network | 30 mins |
| Mystery Diners | Where's the Beef?: Adam is concerned that meat sales aren't reflected in his register, so he calls in Charles. He discovers that the manager is doing more than just giving away free steak. (S2 Ep13) | Mon, Sep 11, 11:30 PM | Food Network | 30 mins |
| Mystery Diners | Love Hurts: When two employees who recently broke-up disrupt staff harmony and start affecting sales at Marche Bacchus, owners Jeff and Rhonda seek Charles' help. (S2 Ep12) | Mon, Sep 11, 11:00 PM | Food Network | 30 mins |
| Mystery Diners | Deliver Us from Evil: After receiving numerous complaints about his delivery service, Danny, the owner of Bella Luna Cafe, contacts Charles for help. Mystery diner Mark goes undercover. (S4 Ep8) | Sun, Sep 10, 9:30 PM | Food Network | 30 mins |
| Mystery Diners | Lactose Intolerant: After learning that several petite women have easily completed their grilled cheese eating challenge, restaurant owner Chris contacts Mystery Diners to investigate. (S4 Ep7) | Sun, Sep 10, 9:00 PM | Food Network | 30 mins |
| Mystery Diners | Wine on Wheels: Gary and Tony contact Charles after hearing rumours that employees are illegally selling alcohol to customers at their BYOB restaurant. (S4 Ep6) | Sat, Sep 9, 9:30 PM | Food Network | 30 mins |
| Mystery Diners | Too Many Cooks: After receiving numerous complaints about his new executive chef, Pascal, the owner of Bistro Bordeaux in Evanston contacts Charles to investigate. (S4 Ep5) | Sat, Sep 9, 9:00 PM | Food Network | 30 mins |