She's a bad friend. Xio Davis makes mistakes at every turn. When she abandons the pack, fleeing town on a stolen motorcycle, she realizes she's bitten off more than she can chew. It starts with petty thefts and ends with a bank robbery. Xio plunges into the criminal world, but is caught by the FBI. Now she has only one choice - become an informant. When Xio testifies against a Mexican drug lord, agent Marcus Cazador gives up his career, his place in the El Paso pack and everything he is accustomed to in order to take her home and protect her. Xio claims that she is no longer the wolf she was ten years ago, but can she convince Marcus of this? And will the Black Hills be the end point on her path to redemption?