Take a look around the next time you're in a restaurant, supermarket or even getting your oil changed. The person next to you could be working undercover as a mystery shopper. It's a real thing -- but bad guys also use mystery shopping to con people out of their money. Debbie Dujanovic spoke to a real secret shopper about how to spot a scam.
Aired: 04/28/2017 at 6:00 p.m.
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