Somewhere near the end, when the rescue team are looking for Mike, the drug dealer, they find his watch. His girlfriend says "Thats Mikes watch" (or something like that). "How can you be so sure"?, a policeman responds. "I gave him this watch, it has his initials engraved on the back". Only problem is, it hasn't got his initials on the back, it has his whole name on there! (This might be a little "diffuse" description, but it has been a while since I saw this movie. It shouldn't be any problem finding this slip-up with this description, though.)