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.

When teen-socialite Kelly Van Ryan and troubled bad girl Suzie Toller accuse guidance counselor Sam Lombardo of rape, he's suspended by the school, rejected by the town, and fighting to get his life back. One cop suspects conspiracy, but nothing is what it seems...

Miss Marple believes she's seen a murder in a passing-by train, yet when the police find no evidence she decides to investigate it on her own.

Miss Marple and Mr. Stringer are witnesses to the death by heart attack of elderly, rich Mr. Enderby. Yet they have their doubts about what happened. The police don't believe them, thus leading Miss Marple to yet again investigate by herself.

A murderer is brought to court and only Miss Marple is unconvinced of his guilt. Once again she begins her own investigation.