Frenzy is a 1972 thriller directed by Alfred Hitchcock. When Richard Blaney (Jon Finch) loses both his menial job as a bartender and his apartment, he becomes depressed and starts drinking heavily. Since Richard is jealous that his ex-wife Brenda (Barbara Leigh-Hunt) has a successful business, he decides to visit her and insults her in front of her secretary, Monica (Jean Marsh). Soon afterwards, a serial killer nicknamed the Necktie Murderer (Barry Foster) pays a visit to Brenda's agency and murders her, leaving his tie around her neck. When Monica finds Brenda's body, she instantly identifies Richard as the killer due to his threatening actions and the fact that she saw him leaving the scene of the crime. Convinced that Richard is guilty, Chief Inspector Oxford (Alec McCowen) begins to hunt for him. With the police on his trail, Richard struggles to find the real killer in order to prove his innocence.