With George Alagiah.
Author William Boyd is the guest on the discussion programme.
Sir Roger Casement went to the gallows in 1916 for trying to enlist German help in the Easter Rising. Ever since, Irish nationalists have claimed his diaries were forgeries created by MI5 to prove him a traitor. This documentary reveals the results of forensic tests to settle the argument.
Another chance, exactly 25 years since its last broadcast, to see Ian Curteis's play from 1977 telling the story of the three Russian spies who penetrated the British Foreign Service in the postwar period. With Derek Jacobi, Anthony Bate and Michael Culver.
Hugh O'Shaughnessy examines April's extraordinary coup and counter-coup in Venezuela.
Joan Bakewell presents coverage of an awards ceremony to celebrate 50 years of artistic achievement.