The role of "Top Secret" shoplifter was actually a two day event. It's played out as happening all on one day during the actual episode. The producer wanted to play a joke on the cast/crew.
So he brought in Actor Rob Tunstall to see if they would notice and actual "shoplifter" in the store. They didn't, so they brought him back to film again on the second day. This time getting Caught Red Handed as the Alias "Haze Mongtega". (Spelled incorrectly in post production as "Hayes Montega" on the mug shot at the end of the scene.)