I'm a little late on this art crime story, but worth mentioning:
"Cops say former chauffeur James Biear ripped off the 80-year-old grandson of newspaper magnate Joseph Pulitzer, stealing an Andy Warhol painting worth $220,000, a $64,000 sketch and family heirlooms from [the victim's] Greenwich Village home, police said."
The plan apparently "came to light when Biear's ex-wife told insurance investigators much of his stuff was stolen, a police source said. That's when FBI agents and cops knocked on Biear's door."