Restaurant owners call a company, called "mystery diners", when/if they are suspicious about their employees. Sometimes they steal or treat customers badly etc... The company will set up surveillance cameras and use actors to help find evidence that the employees are doing these things, sometimes leading to them getting suspended, fired or sued.
MYSTERY DINERS - SEASON 3 - EPISODE 7
BARBECUE BLUES
Summary
Barbecue Blues
Terry, the owner of Cooper's Old Time Pit Bar-B-Que in Dallas, Texas, is concerned that one of his employees is selling his secret family recipe to his rivals and calls in Charles to help find the culprit. The Mystery Diners discover that Terry's nephew Michael who works as a manager is behind this. During the confrontation, Terry fires him. The narrator revealed that Michael was disowned from the family business. The rest of the kitchen staff has signed non-disclosure agreements.
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