In the Season 9 premiere, the owner of "Corbin Bowl" in Tarzana, Cal., contacts Charles for help after hearing complaints about rowdy customers. An investigation reveals that employees are condoning reckless behavior.
Charles and his team investigate "Lenny's Deli" in Los Angeles when the owner expresses concerns that his new baker is taking artistic license with customers' cake orders. However, bigger business-hurting problems are revealed.
The owners of "Hot Red Bus", a British-style restaurant near Los Angeles, contact Charles after hearing rumors that their business is open on the day it's supposed to be closed.
Charles has a repeat customer when the owner of "Capo's Speakeasy" in Las Vegas, who the team helped in the past, requests a sting operation on his personal chef.
Theft is a concern for the owners of "MovieSets", a prop house-turned-event center in New Orleans, so Charles investigates by sending in two members of his team to pose as an engaged couple who are interested in booking their wedding reception.
The undercover team discovers that a problem employee previously busted by Charles now works for a New Orleans restaurateur who is concerned about an unhealthy competition between two of her businesses.
The owner of "Marigny Brasserie" in New OrIeans isn't happy about the influx of rowdy tourists at his "locals bar", and so he contacts Charles and his team to investigate the situation.
A bigger problem is exposed after the owner of "Victory" in New Orleans contacts Charles to investigate rumors that his restaurant's signature cocktail is being served at other nearby bars.
Charles and the team travel to the "Gateway Restaurant and Lodge" in Three Rivers, California to determine which staffer is throwing unauthorized parties in vacant cabins.
The owner of "Fuzion" in Huntington Beach, Cal., suspects a manager has stolen more than $4000 from her restaurant's safe, which leads to an undercover operation to collect fingerprint samples from all of the possible culprits.