London is terrorized by a vicious sex killer known as The Necktie Murderer. Following the brutal slaying of his ex-wife, down-on-his-luck Richard Blaney is suspected by the police of being the killer. He goes on the run, determined to prove his innocence.

Marking Alfred Hitchcock's return to England and first foray into viscerally explicit carnage, Frenzy finds the master of horror regaining his grip on the audience's pulse -- and making their blood run cold.