Greatest Enemy: A David Rivers Thriller (American Mercenary, 1)

“Jason Kasper’s American Mercenary series boils with bold action, exotic locales, and spellbinding intrigue.” Mark Greaney, #1 NYT Bestselling Author of the Gray Man series

David Rivers is an Army Ranger—a combat veteran of the wars in Afghanistan and Iraq. He has almost completed his final year at West Point when his world is turned upside down by a sudden discharge from military service. Angry and confused, David soon hits rock bottom.

And that's when they appear.

Three mysterious men. Men who know David's dark secret—they know that he has murdered someone in cold blood.

And they want him to do it again.

Jason Kasper is the USA Today bestselling author of the Spider Heist, American Mercenary, and Shadow Strike thriller series. Before his writing career he served in the US Army, beginning as a Ranger private and ending as a Green Beret captain. Jason is a West Point graduate and a veteran of the Afghanistan and Iraq wars, and was an avid ultramarathon runner, skydiver, and BASE jumper, all of which inspire his fiction.