The stakes are higher and more personal than ever.

The Assassin's Ultimatum is the spy thriller you've been waiting for. It's full of non-stop action and the twists and turns never stop. Every page is exciting and dripping with suspense.

It continues the series many have called the best thing since Jason Bourne.

The Assassin's Ultimatum is the fourth entry in what is one of the most full-throttle CIA assassin series to hit bookstores in decades. It has been created from the ground up to fill the space between Jason Bourne and Mitch Rapp. The extensive series will see one new novel every four months.

Auston King is an avid reader, who has consumed every Tom Clancy, Brad Thor, Lee Child, Vince Flynn and Robert Ludlum book he could get his hands on and he wants to share stories that entertain, provoke, and leave you wanting more.