Ben Macintyre is a writer-at-large for The Times (U.K.) and the bestselling author of The Spy and the Traitor, A Spy Among Friends, Double Cross, Operation Mincemeat, Agent Zigzag, and Rogue Heroes, among other books. Macintyre has also written and presented BBC documentaries of his work. His new book, Agent Sonya, is now available from Crown Publishing.