Morrigan's Cross: 1 (Circle Trilogy) - Nora Roberts

ZEB CARTER'S EMPLOYER HAS RULES. HE HAS NONE.
His employer, a US covert-ops outfit, sent a hit team after him just because he deviated from a mission.
He wanted to avenge the murder of innocents.
Caught between lethal killers from his own side and rogue mercenaries, he has a decision to make.
Should he fake his own death and disappear in the shadows? Or, continue on his vengeance mission, which is highly likely to kill him?
A pedal-to-metal thrill ride full of unexpected twists and did-not-see-that-coming turns, The Warrior features a new protagonist unlike any other in the thriller world.
If you're a fan of Lee Child, Vince Flynn and David Baldacci, you'll love Ty Patterson's no-holds-barred style of storytelling.
The Warrior is the first in a series that features Zeb Carter. Fifteen books and counting, each one can be read stand-alone.
'Forget all those Reacher, Rapp and Harvath clones. Try Zeb Carter. You'll love him'
'Ty Patterson is a unique voice in thriller fiction. His books should come with a health warning: Highly Addictive!'