When a judge shuts down a high profile cheese factory for violating pollution standards, the owner bribes a monsignor to fix the problem. After they discover the judge has a predilection for married women, the owner employs a prostitute to pose as his wife in an attempt to seduce the judge.

When socialite and heiress Julie Wardh begins receiving blackmail letters attributed to a mysterious serial killer, she suspects her cruel and sadistic former lover Jean is behind them. With her husband Neil frequently out of town, she falls into the arms of her friend's cousin George, and as the unknown assassin begins to make his move, she fears that one of the three men in her life may be the killer.