Lena Adams is a tough, hard-headed cop with an unorthodox and at times, violent and cruel past that she has worked long and hard to escape. Jeffrey Tolliver is her boss, the Chief of Police of Heartsdale, a small town in Grant County; the only man she has ever truly trusted and the only person who has ever believed in her. When Jeffrey receives a call to say that his detective is currently in a hospital bed in the nearby town of Reece but also in custody on suspicion of murder, Jeffrey and his wife, Heartdale's medical examiner and only doctor, Sara Linton, quickly go to her aid.