I worked for the world's largest retailer and this happened a lot. They are probably going to try to get you to cash it. I would call the police, sometimes they care and will set up a sting, other times they will tell you to rip it up. bustieoneKarma is right, it is a fake, but call the police and see what they want to do. The Dover NJ police (with someone from the FED) arrested the guy, you just need to stay as far away from it as you can. the other suggestions are good also, you can go to the bank and explain FIRST why you are bringing it in.