John Drake flies to the Arabian desert to investigate stories of slavery and finds himself befriending a Muslim lad and helping a stranded showgirl who believes Drake to be a slave broker.

When the daughter of a wealthy industrialist is kidnapped, Drake impersonates her crippled father in an attempt to save her without having to hand over crucial designs.

John Drake has to impersonate a prisoner who has just been released after serving a sentence for bombings. His assignment is to infiltrate a group of IRA commandos.

Hardy assigns Drake to investigate when the entire research team working in tropical diseases is killed by mysterious accidents. Drake travels to India, and uncovers clues that one of the scientists may be alive.

When several prominent people are killed, there appears to be no connection. But John Drake's investigations uncover a murder ring, which he hires to kill himself.

When a Chinese businessman is murdered, a young couple on honeymoon become the prime suspects. John Drake flies out to the Far East to assist them, and finds himself in a dangerous situation.

A plane crashes off the coast of Sicily and a diplomatic satchel is taken by mountain bandits. John Drake's task is to recover the stolen property, for which he enlists the aid of one bandit's girlfriend.

Drake poses as a professional assassin in an attempt to prevent the assassination of a South American President. He joins a revolutionary group who are planning to kill the President.

A miniature submarine is wrecked off the coast of a South American country. John Drake's assignment from British Intelligence is to blow her up. Disguised as a fisherman, Drake races against time to find the submarine before the agents of a foreign power can.