'Traitor': Former FBI spy-catcher spills interrogation secrets in gripping new book

Former FBI counterintelligence agent Wayne Barnes says one of the best ways to catch a spy is to ask a simple question — like when his birthday is.Barnes, whose new book "A Traitor in the FBI: The Hunt for a Russian Mole" came out last month, spent nearly 30 years in counterintelligence, where he debriefed a record number of Soviet and Soviet-Bloc assets. In an interview with Align, Barnes described the psychological tactics, subtle tells, and ethical contrasts that defined Cold War espionage.'Y...