Roy Farrell is convinced that he has no future.

Roy never wanted to be anything but a Marine. But on his last tour of duty, he was bitten by a werewolf. Next thing he knew, he was locked up in a secret underground laboratory. Despite the agony caused by his newly enhanced senses, he managed to escape his captors. Unable to return to the Marines, his entire life shattered, he hid out in the woods of Yosemite.

Laura Kaplan is desperate to escape her past.

Reformed con artist Laura was acclaimed as a hero for her courage during a bank robbery gone...

Echo was created to be a weapon. Echo was born when a secret laboratory tried to genetically engineer the perfect assassin. Two clones survived: Echo, the success, and Charlie, the failure. Stronger and faster than any normal human, Echo knows no life but killing, and has never loved or been loved by anyone but her frail sister. But that's about to change... DJ Torres made himself into a Marine. DJ was born a werewolf. But he grew up to be a rebel, and left his pack to join the Marines. When his helicopter was shot down in Afghanistan and his best friend lay dying in his arms, DJ bit him to...

Echo has devoted her life to protecting her sister. In all her years as a genetically engineered assassin, Echo never met anyone like DJ Torres before. The captured werewolf Marine offered her trust, friendship, love, and the hope of freedom- not only for herself, but for the frail clone-sister she won't leave behind. But will Echo's dark secret destroy their hopes for the future? DJ Torres would give his life to save his buddy. DJ has spent his life accomplishing the impossible. But now he's faced with a dilemma that threatens to crush even his bright spirit. DJ can't rescue his captured...