Here's a link to Art Cops, "A new series dealing with the theft of works of art, antiquities, books and maps from major museums, cultural institutions and collectors" (Twitter), hosted by Burt Wolf, a public television host of Travels & Traditions.
This episode, which aired on September 1, 2012 on Iowa Public Television, tells the story of "The Missing Stradivarius", the 1995 theft of a $3.5 million Stradivarius violin stolen from the New York City Apartment of Erica Morini while the 91-year-old Viennese violinist was dying in the hospital. The rare violin remains missing today. (You can read more about stolen Stradivarius violins on the website of violinist Joshua Bell in an article by David J. Krajicek for The New York Daily News. Mr. Wolf interviews Mr. Bell; Christopher Marinello of The Art Loss Register (and a frequent speaker at ARCA's art crime conferences); Dorit Straus, world-wide fine arts manager at Chubb Insurance Company (and an ARCA Lecturer); Bob Wittman, former FBI agent; and Bonnie Magness-Gardiner, head of the FBI's Art Crime Team.
The same episode discusses "The Romanoff Heist" when thieves stole twelve art works by Pop Artists Andy Warhol and Roy Lichtensteins from the residence of Robert Romanoff in Manhattan's Meat Packing District on Thanksgiving weekend in 2010.
Mr. Wolf also identifies three artworks Marinello and The Art Loss Register are "particularly interested in recovering": Pablo Picasso's Portrait of Dona Maar stolen in 1999 from the yacht of a Saudi Prince while anchored for repairs in the harbor at Antibes on the French Riviera; a portrait of Francis Bacon by Lucian Freud stolen when the Tate Gallery of London lent the painting to the Neue Nationalgalerie in Berlin; and the theft of a painting by Gustav Klimt in 1997 from a gallery under renovation in Italy (someone opened the skylight).