"Black ops specialist Aubrey Sentro may be one concussion away from death. But when pirates seize the cargo ship she's on, she must decide whether to risk her life to save her fellow passengers. Sentro's training takes over, and she's able to elude her captors, leaving bodies in her wake. But her problems are just getting started. Her memory lapses are getting more frequent, symptoms of serial-concussion syndrome. As she plays a deadly game of cat...

"When a Canadian spy comes to ex-black ops specialist Aubrey Sentro for help tracking down notorious Cold War spymaster Gu·nter Witt, she wants to say no. It's been thirty years since Aubrey's captivity in East Berlin, and she has no desire to return. Her focus now is on mending the relationships that suffered during her years working in the shadows. But when a ruthless mercenary targets Aubrey and her daughter, the game changes. With Witt back on...