Will believes his wife Rosalind is innocent of their son's suspected murder, only to discover the devastating truth behind her past links her to another unsolved crime.

Victor Maynard is a middle-aged, solitary assassin, who lives to please his formidable mother, despite his own peerless reputation for lethal efficiency. His professional routine is interrupted when he finds himself drawn to one of his intended victims, Rose. He spares her life, unexpectedly acquiring in the process a young apprentice, Tony. Believing Victor to be a private detective, his two new companions tag along, while he attempts to thwart the murderous attentions of his unhappy client.