Matthew Sweet and guests explore the art of the con.... If you've ever fallen for a scam, you'll be reassured by

Orson Welles was infamous early in his career for a radio broadcast of HG Wells' War of the Worlds which - it's said - caused genuine panic that aliens were invading earth. For Free Thinking Larushka Ivan-Zadeh discusses Welles's last film, F For Fake, which tells the tangled story of art forger Elmyr de Hory.

And Gary Lachman and Kevin Jackson visit a new exhibition about Elizabethan alchemist, philosopher and mathematician John Dee - a mysterious figure who during his long career was sometimes a con-artist, and sometimes the conned.