Mark Greaney stopped by The Protectors to talk about the new book in the Gray Man Series, Relentless.  We talk the intensive research process,  the Gray Man Series becoming a movie with Ryan Gosling & Chris Evans, lessons learned, and a ton of other topics.  ABOUT: #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.Support the show (https://www.patreon.com/theprotectors)