Gideon's Sword by Douglas Preston

Introducing Gideon Crew: trickster, prodigy, master thief

At twelve, Gideon Crew witnessed his father, a world-class mathematician, accused of treason and gunned down.

At twenty-four, summoned to his dying mother's bedside, Gideon learned the truth: His father was framed and deliberately slaughtered. With her last breath, she begged her son to avenge him.

Now, with a new purpose in his life, Gideon crafts a one-time mission of vengeance, aimed at the perpetrator of his father's destruction. His plan is meticulous, spectacular, and successful.

But from the shadows, someone is watching. A very powerful someone, who is impressed by Gideon's special skills. Someone who has need of just such a renegade.

For Gideon, this operation may be only the beginning . . .