A newspaper reporter sets out to track down the murderer of a policeman.

Without a job, a young man is given the opportunity to run his ill uncle's private-detective agency. He finds himself mixed up with everything from an unfaithful husband who is a secret nudist to a schoolteacher who believes his pupil's father is beating him.

During a horrific storm at sea, the crew realizes that there is a murderer among them who is killing them off one by one.