When Professor Willingdon becomes wary of the nuclear weapons he is helping build, he steals a warhead and threatens to detonate it in London in seven days unless the government begins nuclear disarmament. As Willingdon goes into hiding, Detective Folland of Scotland Yard sets out to find him. Willingdon's daughter Ann also joins the c...

After WW2, a Los Angeles crime ring uses a complex scheme, involving a freight ship, a junkie, and a corrupt health officer, to smuggle drugs into the USA.

Detective Guy Johnson's client, Willie Heywood, is framed for murder. While Guy hides him so he can catch the real killer, both of them are nabbed by the police, tried, convicted and sentenced to jail: Guy for a year with Willie to be executed. On the way to jail, Guy comes across a clue and escapes from the police.

A garage owner marries a much younger woman. Trouble begins when he becomes friends with a man who has his eyes on his former-showgirl wife.

After being framed for a policeman's murder, a criminal escapes prison and sets out for revenge.