For some reason saying "Would you like to come up and see mein Campendonk" doesn't elicit the same response as:
One of his forgeries hung in a show at the Met. Steve Martin bought another of his fake paintings. Still others have sold at auction for multi-million-dollar prices. So how did a self-described German hippie pull off one of the biggest, most lucrative cons in art-world history? And how did he get nailed?