The past doesn't forgive. The past doesn't forget. And it knows where to find you.

Rob Rennie's life hasn't gotten any quieter since he left the Royal Marines and teamed up with an American vet, Mike Brayne. Mike - eccentric, idealistic, and enormously wealthy - can't resist righting wrongs. He's rescued a genetically engineered teenager on the run from an experimental defense program and brought down the head of the biotech corporation hunting the boy, and now he's waiting for the company to make another move, if it dares. He'll kill to protect the kid if need be.

But Rob lives by the maxim that there's no such thing as over. And something's certainly not over for him. An unknown, unseen enemy is stalking him, with tragic consequences for his son and ex-wife. As Rob and Mike close ranks to protect their families, they find themselves up against industrial espionage, two warring scientists, and a blood feud that won't end until somebody pays with their life.

The buried past has been biding its time to explode beneath them. Now, their best hope of putting it to rest forever could lie in the unique genetic skills of a runaway teenager.