<p>Turn it into the police. You wouldn't be ruining his life. Whatever occurs would be the result of actions he chose to take.</p>
<p>By getting the tape, etc., you would be protecting yourself further as well as protecting other potential victims. </p>
<p>Do not confront him with the tape copy. Do not let him know anything about what you're planning to do. </p>
<p>Years ago, a student at a college where I was a professor was stabbed to death. A friend of hers had stolen her bank card and was using it. The student who was killed had gone to the police about the theft, and didn't know the thief was her friend.</p>
<p>The police told her that the bank had photographed someone using her bank card, and the police asked her to view the tape to try to ID the person. She told her friend about this, and he stabbed her to death. He confessed, and was sent to prison.</p>
<p>Back to your situation: I too am amazed at how your reaction to the situation has been to feel powerful about what you perceive as the chance to ruin someone's life. I find it odd that you feel so joyful about this "power". I also find it odd that you would consider yourself as being in a position to ruin the life of someone who chose to steal from you. Any consequences of the theft are a result of the thief's decision to steal.</p>
<p>I was going to come in here and say no, because I thought for sure this was a jealous ex-girlfriend, or jealous guy thread...but come on, this is a no brainer. The person is committing serious crimes, so he should be punished.</p>
<p>Give the police the tape. You don't know if this is this guy's first offense, or if he's been getting away with it before you came along. Don't let people like this think they can get away with their actions by playing on the sympathies of the rest of the population.</p>
<p>I'm shocked that this is even a question and amazed that you feel so "powerful". Ha! What a load.</p>
<p>Really, just turn it in. You're not doing any good by not doing it, and you're not doing any bad by turning it in; it can only benefit you to turn it in. Don't be a vigilante and try to confront him, either.</p>