Frederic Bourdin, the French Cameleon, is a Gem.

This story was in the New Torker.

This guy, who is now 30, has about 100 different identities. He most likes to impersonate teenagers who have been abused. He is NOT a pedophile, just someone who wants to be loved. When he was pretending to be a teenager, all the other kids liked him, and no one imagined he was really an adult. He actually arrived in the U.S. pretending to be a missing child who had reappeared, and stayed with the family for six months. Later he admitted he had "crossed a line" but says that he did not mean to hurt anyone.

I saw him on YouTube. He is very charming. He just got married and has a kid.