If you choose to live a life of crime, I would think there would be a few rules you would want to follow. You know, don't leave evidence behind that traces the crime back to you. But we always seem to find stories of criminals leaving evidence that turns out to be a "pretty good" lead.

Recent examples include: someone that drops their wallet during a bank robbery, or footprints in the snow that lead to a suspect.  Well here is a new one.  This guy left his phone number with a waitress before he robbed the joint!