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.

Glamour model Diane Shepherd is routinely being beaten by her husband Tim, who accuses her of infidelity. When she can't take it anymore, she finds shelter with photographer Mark and his girlfriend Carrie. They introduce Diane to Millie, who is in a similar situation. Meanwhile, Tim informs Diane that if she doesn't come back to him, he will see to it that he gains custody of their son, Timmy.

When a young man brings an unexpected new partner home for dinner, the underlying prejudices of his straitlaced, middle-class parents are brought to the fore.