A missing national treasure. A dancer who might be a spy. A double agent. An old actor. A murder. How are they all interconnected? Desmond Okewood, new to the British Secret Service, must impersonate a German agent, infiltrate a band of traitors, and discover the connections.
The Man with the Clubfoot is one of the most ingenious and sinister secret agents in Europe. It is to him that the task is assigned of regaining possession of an indiscreet letter written by the Kaiser. Desmond Okewood, a young British officer with a genius for secret service work, sets out to thwart this man and, incidentally, discover the whereabouts of his brother. He penetrates Germany disguised and meets with many thrilling adventures before he finally achieves his mission.
While spending a holiday in a small Central American republic, Desmond Okewood of the Secret Service learns from a dying beachcomber of a hidden treasure. With the assistance of a millionaire, he sets out for Cock Island in the Pacific. To his astonishment he discovers that the Man with the Clubfoot, whom he had regarded as dead, has anticipated him.