Court Gentry was the CIA's best agent - until the day the Agency turned against him and put out a kill-on-sight order. That's when the enigmatic international assassin called the Gray Man was born, and Court has been working for himself ever since.

Court is determined to find out what happened all those years ago to make the Agency turn against him. On his list to interrogate are his former partners and the men who sent him on his last mission. What he doesn't realize is that the questions that arose from that mission are still reverberating in the US intelligence community, and he's stumbled onto a secret that powerful people want kept under wraps. And now they have him in their crosshairs.

Court is used to having people on his trail, but this time, it's on US soil - the last place he wants to be. He'll have to find the answers to his fate while evading capture . . . and avoiding death.

"Greaney's unraveling of the Back Blast mystery is masterly, but it's the Gray Man's ability to outthink and outgun the scores of men who are hunting him throughout the streets of Washington, D.C., that will keep readers glued to the pages." - Publishers Weekly

"Clancy fans will have a blast." - Kirkus

"Greaney is a master among the top thriller writers in the world...Intense, explosive, daring, funny, and ultimately just flat out awesome." - Ben Coes

"Mark Greaney reigns as one of the recognized masters of action and adventure. Back Blast is no exception." - Steve Berry

"Fast-paced [and] tightly written...A great ride." - Larry Bond

"Back Blast is one of those books where readers will not want to put it down. Many of the details are very realistic and the thrilling action will keep people glued to the pages. Anyone interested in an espionage spy novel should read this book." - Crimespree Magazine

"The Gray Man series features some of the best action sequences written in recent memory, as that's proven to be Mark Greaney's specialty. He also weaves in enough twists and turns to keep the reader off balance and guessing until the very end." - The Real Book Spy