We are pleased to bring back NYT Bestselling author Mark Greaney as he talks his latest Grey Man series book RELENTLESS. #1 NYT bestselling author Mark Greaney's debut international thriller, THE GRAY MAN, was published in 2009 and became a national bestseller and a highly sought-after Hollywood property. Ten subsequent Gray Man novels have been released to date, including his latest, RELENTLESS. Mark is also the #1 New York Times bestselling author or coauthor of seven Tom Clancy novels, including his most recent TOM CLANCY TRUE FAITH AND ALLEGIANCE. He collaborated with Tom Clancy on three Jack Ryan novels before Tom's death in 2013. RED METAL, a military thriller written by Mark Greaney and Lt Col Hunter R. Rawlings, USMC, became a New York Times bestseller in 2009. Mark's books are published in several languages and are also available as audiobooks. A feature film adaptation of THE GRAY MAN is in production at Netflix, with Ryan Gosling in the title role. A feature film adaptation of Mark's scripted audio play Armored, is in development with Michael Bay and Erwin Stoff to produce. "RELENTLESS": The Gray Man's search for missing intelligence agents plunges him deep into a maelstrom of trouble in the latest entry in the #1 New York Times bestselling series. The first agent disappearance was a puzzle. The second was a mystery. The third was a conspiracy. Intelligence operatives around the world are disappearing. When a missing American agent re-appears in Venezuela, Court Gentry, the Gray Man, is dispatched to bring him in, but a team of assassins has other ideas. Court escapes with his life and a vital piece of intelligence. Meanwhile, CIA agent Zoya Zakharova is in Berlin. Her mission: to infiltrate a private intelligence firm with some alarming connections. The closer she gets to answers, the less likely she is to get out alive. Court and Zoya are just two pieces on this international chessboard, and they're about to discover one undeniable truth-sometimes capturing a king requires sacrificing some pawns.