A big box retail store hired me to catch a thief. They’d determined that somewhere between the goods being off loaded at the dock and where the products hit the store shelves someone was helping themselves. In my experience it was going to be an employee.
My job wasn’t made any easier as the typical store manager response when they believe they have an employee stealing is to tell all the employees, “We know someone has been stealing and we are going to be keeping a close eye on the inventory.” Of course the manager is hoping that whoever is stealing will stop. It didn’t work. I like stupid criminals that don't get the message.