On Dec. 28, former U.S. Marine and citizen of the U.S. citizen Paul Whelan disappeared in Russia. Since then, his story has captivated the world. Three days later he turned up in a Russian prison, arrested for allegedly committing espionage. What was he doing there? What's the basis for the charges? Is he a "pawn" in a political tug of war between the U.S. and Russia? In an extensive interview, Target USA spoke with Whelan's twin brother David Whelan, and got answers to all those questions and many more. Some of the answers may surprise you, and after you listen there'll be no doubt about just how serious this situation is.