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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. After sparing her life, he unexpectedly acquires a young apprentice. 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.

Upon waking up to the news that the man she’d gone on a date with the previous night has been murdered, a young woman with only a faint memory of the night’s events begins to suspect that she murdered him while attempting to resist his advances.

Arthur Bishop is a veteran hit man who, owing to his penchant for making his targets' deaths seem like accidents, thinks himself an artist. It's made him very rich, but as he hits middle age, he's so depressed and lonely that he takes on one of his victim's sons, Steve McKenna, as his apprentice. Arthur puts him through a rigorous training period and brings him on several hits. As Steven improves, Arthur worries that he'll discover who killed his father.

A veteran homicide detective who has witnessed his socialite girlfriend kill her husband sees his inexperienced brother assigned to the case.

After an innocent man is executed in a case he was responsible for, a Scotland Yard superintendent finds himself investigating the murder of his key witness.