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.

When Chris, owner of Spring Street Smoke House in Los Angeles, notices a decrease in his valuable fat trimmings, he contacts Charles for help. Mystery Diners Amber and Grant go undercover to discover the meat of the problem.

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.

When Doug, owner of Pelons Tex-Mex Restaurant in Austin, Texas, hears rumors that his staff is collecting money for an unauthorized charity, he contacts Charles to investigate. Mystery Diners Holly and Jordan go undercover to see if the reports are true.

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.

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 kegs of his privately brewed beer are showing up at local frat parties, Rick, owner of Uncle Billy's Brew and Que in Austin, Texas, contacts Charles for help. Mystery Diners Vanessa and Robin go undercover to see how easy it is to purchase a keg.

Fearing that her employees are selling the secret recipes to her raw food menu, Sylvia, owner of Beets Cafe in Austin, Texas, contacts Charles for help. Mystery Diners Holly and Robin go undercover and discover an even bigger problem.

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 to investigate. Mystery Diners Andy and Peter go undercover and discover an employee with a gambling addiction.

When Marty, owner of Barefoot Bob's Beach Bar & Gaming in Las Vegas, hears employee complaints about his new manager, he asks Charles to investigate. Mystery Diners Hollie and Andy go undercover to find the source of the problem.

Rosele, owner of Sergio's Italian Gardens in Las Vegas, is concerned about a conflict between her longtime pianist and recently hired magician. Charles sends in Mystery Diners Hollie and John to find out which performer needs to go.

After experiencing discrepancies with their supply of expensive protein supplements, Larissa and Andrew, owners of Protein House in Las Vegas, contact Charles to investigate. Mystery Diners Andy and Kelli go undercover and discover the real cause of the problem.

After a feud between his pizzeria and bakery threatens his business, John, owner of Metro Pizza in Las Vegas, contacts Charles for help. Mystery Diners Andy and Arielle go undercover and discover the source of the tension.