His name was Stéphane Breitwieser. By day, he worked as a waiter in Switzerland. By night, he became one of history's most prolific art thieves. Between 1995 and 2001, Breitwieser stole 239 artworks from 172 museums across Europe. He never used weapons. Never threatened anyone. Just walked into small museums during visiting hours, slipped paintings under his coat, and left. He averaged one theft every 15 days for six years. Works by Brueghel, Watteau, Boucher, Lucas Cranach the Elder. Total valu