Make up an email address that's free of cost to you. Put it back with a note in the bottle telling the person to contact you at the address and explain what is missing and why it was placed there, also have them give a way to be contacted such as their phone number but don't call them from anything but a pay phone so it can't be traced back to you. Date the entry in the bottle and give them a deadline or it belongs to you. Once you have made contact you can agree to leave it somewhere and then e the location back to them. If you want to know who it is just hang around and watch to see who picks it up. If they leave their phone number do a reverse look-up and get their name. You could even leave a boobie trap, one of those rope things that will hang them in a tree by their feet. Then you could coincidently find them and help them down asking what happened. When all is said and done place a cache in the hiding place in their honor. Or you could just replace the bottle with some of that shreaded money in it. While it may be honest money or illegal money just remember the decision you make is one you'll have to live with. If you end up keeping it after trying all else but are well enough off that you don't need it, find someone who does. If you don't know anyone just go hang out in a thrift shop and watch and listen it's easy to tell who "needs" it and who wants it. Just tag each bill with wheresgeorge and ask them to log the bills. It would be neat to see where your good deed went after that. O.K., I'm done giving fatherly advice, GO CACHE!!!!