The cybernetic arm was supposed to help Lena-not turn her into a monster. Now, she's stuck with it, and her friends are terrified of her.And maybe they should be.The arm's artificial intelligence takes Lena's thoughts to the extreme. It acts when she doesn't tell it to, even when she's asleep.Ever since she got the new limb, she's been sleepwalking and waking in odd places. To Lena, this is just another example of how CyberCorp-her parents' company and the manufacturer of the arm-screws up everything.As the rollout of CyberCorp's new android approaches, a murderer targets children of the company's employees. And thanks to her sleepwalking, Lena doesn't know what she was doing during the murders.When the evidence points to her, Lena decides to prove her innocence-or her guilt.