When Joe, the owner of Harvey's Steakhouse in Huntington Beach, Calif., notices a decline in his restaurant's older customers, he contacts Charles Stiles to investigate. Mystery Diners Destiney and Hal go undercover and discover the staff is hosting unauthorized events to drive in younger patrons.
Danny and Jonathan, owners of Old School Bar and Grill in Austin, Texas, are concerned about a loss of revenue on their "Poetry Nights." Charles sends in Mystery Diners Justin and Samantha to find out why the register is being affected.
After receiving numerous complaints about his delivery service, Danny, the owner of Bella Luna Cafe in Chicago, contacts Charles for help. Mystery Diner Mark goes undercover and discovers both delivery drivers are taking advantage of the restaurant -- and customers.
Mystery Diners counts down the top ten biggest twists that surprised Charles Stiles and the various restaurant owners who called for help.
After hearing complaints that their late night security guard is being too rough with customers, Dave and Mike Frank, co-owners of Del Rossi's Cheesesteak Co. in Philadelphia, contact the Mystery Diners for help. Charles sends in Joe and Kiara and discovers a bigger problem inside the kitchen.
Mystery Diners counts down the series' greatest moments catching employee theft, involving stolen food, alcohol, supplies and money.
Former client Jaime contacts Charles Stiles to help determine if he should invest in a failing California restaurant. Mystery Diners Kendall and Kiel go undercover and discover the current owner isn't being honest about all of his problems.
After learning that several petite women have easily completed their grilled cheese eating challenge, Chris, the owner of Cheesie's Pub & Grub in Chicago, contacts Charles to investigate. Mystery Diners David and Destiney attempt the eating challenge for themselves and discover several employees are bending the rules for certain customers.
After Paul, owner of Nacho Daddy in Las Vegas, notices a discrepancy in the expensive scorpions used in his restaurant's "scorpion shot," he contacts Charles Stiles to investigate. Mystery Diners Andy and Peter go undercover and discover an employee with a gambling addiction.
While recovering in Brazil from a paragliding accident that almost killed him, Kevin, owner of Gauchos Village in Glendale, Calif., has noticed a discrepancy in revenue and inventory at his restaurant. Charles sends in Mystery Diners Grant and Amber who discover the employees are taking advantage of Kevin's absence.
Carl, owner of Bakehouse Restaurant and Bar in Austin, Texas, fears a dispute between his son and favorite waitress is threatening the harmony of his restaurant. Charles sends in Mystery Diners Holly and Samantha to decide which employee has to go.
After hearing rumors that customers are being served food off-menu, Esdras and Javi, owners of Mexicali Tacos in Los Angeles, call Charles to investigate. Mystery Diners Brenda and Grant go undercover to find out what the head chef is really cooking.
Gary and Tony, co-owners of Big & Little's Restaurant in Chicago, contact Charles after hearing rumors that employees are illegally selling alcohol to customers at their B.Y.O.B. restaurant. Mystery Diners Siera and Destiney go undercover and discover a mobile liquor store parked on the street.
Marko and Brett own competing food trucks in San Diego, but put aside their differences to investigate revenue loss in both of their vehicles. Charles Stiles sends in Mystery Diners Seth and Corinne, who discover that their employees are turning a friendly competition into an all out war.
When Rod and Linda, owners of a la carts Food Pavilion in Portland, Ore., hear complaints from their tenants about the new onsite manager, they contact Charles Stiles to investigate. Mystery Diners Amber and Joshua go undercover to see if the grievances are valid.
After finding broken dishes is his trash on numerous occasions, Nader, who owns My Greek and Italian Restaurant in Tacoma, contacts Charles to investigate. Mystery Diners Brianna and Nadine go undercover and discover someone on the staff is getting carried away with Greek traditions.
After a feud between his pizzeria and bakery threatens his business, John, owner of Metro Pizza in Las Vegas, contacts Charles Stiles for help. Mystery Diners Andy and Arielle go undercover and discover the source of the tension.
Jorge, owner of Moreno's Cuba Cafe and Riviera Hotel in Miami Beach, Fla., believes his staff is sneaking their friends into the hotel's free happy hour. Charles Stiles sends in Patrick and Tina to see how the uninvited guests are gaining access.
Fearing that a rivalry between her two flair bartenders is the cause of tension and missing alcohol, Sarra, owner of The Compass in Carlsbad, Calif., asks Charles Stiles to investigate. Mystery Diners Amanda and Chelsea go undercover to find out who's the real culprit.
Fearing that their staff is getting carried away with the digital shorts they produce to promote the restaurant, Rashad and Kiauna, owners of Amalfi's in Portland, Ore., contact Charles Stiles for help. Mystery Diners Amber and Josh go undercover to investigate.
When Roland, owner of Marigny Brasserie in New Orleans, notices an influx of rowdy tourists at his "locals bar," he contacts Charles Stiles to investigate. Mystery Diners Nicole and Eliot go undercover to see who's profiting from the new customers.
Steve, owner of Nashville Street Tacos and The Stillery in Nashville, believes his part-time apartment above his restaurant is being used while he's out of town. Charles Stiles sends in Mystery Diners Jamie and Brooke to investigate.
After noticing excess lobster meat and an increase in mileage, Peter, owner of the Roll'n Lobster Food Truck in Los Angeles believes his new drivers are using his vehicle for personal errands. Charles sends in Mystery Diners Shelby and John to crack the case.