Samantha Mack is a cop with a drink problem, a married lover and blood on her hands. On an impromptu sting operation, her ex-partner Fred Maloney is shot dead with her gun. Sam remembers firing her gun at the perp, a suspected child molester, until it was empty, but when she wakes up in hospital, there is no evidence that there was anyone besides her and Fred at the scene, alive or dead. The department want to call Fred's death an accident and move on, but Sam wants the truth, even after she is suspended for failing to go along with their conclusions. With only her lover, Homicide Detective Mason Imes, and Alex O'Connor from Internal Affairs to help her, Sam sets out to discover what really happened. But who can she trust? And when will Fred's killer come after her? Theresa Schwegel's powerful debut, Officer Down, is a roller coaster of a crime novel - where up is down and friends might be enemies, and where you have to look out for yourself because no one else will.