Nicky Sullivan is the resident manager of a sober living home in Chicago. There she rides herd on ten newly sober addicts and alcoholics, trying to point them in the right direction while keeping their chaos to a minimum. But when one of her residents is murdered, Nicky turns to the investigative skills honed during her past career as a homicide detective. She calls on her old police partner who has been assigned the murder investigation along with his new partner, a woman beautiful enough to give Nicky pause. The body count starts to mount as it becomes clear a serial killer is at work, targeting newly relapsed women, all of whom have some connection to Nicky. Each death makes her feel she's wielded the knife herself. In the midst of the tragedy, she finds herself falling in love.

With the lives of fragile women in the balance, Nicky finds her own sobriety threatened. Can Nicky save her lover and find the killer? How many others must die before she does?