A long-time advertising executive wronged for a promotion, he accidentally kills a panhandler and subsequently meticulously plans the murders of his wife Leslie and rival Robert Benham to eliminate his enemies. He successfully evades police detection, secures the promotion, and ends the film satisfied after implying the death of his boss Mr. Jones.
Laker identifies Graham as the prime suspect in a series of suspicious deaths.
Stella harbors romantic feelings for Graham, which he exploits to create a false alibi.
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