It was originally known as Mysterious Mr. Moto of Devil's Island.
Plot
A daring escape is made from the French penal colony on Devil's Island by Mr. Moto, pretending to be Ito Matsuka, a Japanese murderer, and Paul Brissac, who belongs to a group of assassins. Brissac changes his name to Romero when they arrive in London and Moto stays on as his houseboy.
Moto then uncovers a plot to assassinate pacifist industrialist Anton Darvak.
^"NEWS OF THE SCREEN: George Arliss Will Appear in 'Suez' at 20th CenturyFox-Donald O'Connor Gets Role in Crosby Film Other Items at Fox Coast Scripts Of Local Origin". New York Times. March 12, 1938. p. 13.
^"RICHARD DIX CAST FOR 'GROUND CREW': To Star in Picture Which RKO Will Make One of Its More Impressive Productions DICK POWELL GETS ROLE Will Appear in 'The Hottentot'-'Start Cheering' Opens at Rialto Here This Morning Frances Farmer Replaced Coast Scripts Of Local Origin". New York Times. March 16, 1938. p. 21.
^HEDDA HOPPER (April 7, 1938). "In Hollywood". The Washington Post. p. X26.
^"Nationalities Vary On 'Mr. Moto' Set". The Washington Post. April 19, 1938. p. X10.
^"Age Moto 40 Years In 20 Minutes". The Washington Post. May 8, 1938. p. TT4.
^von Blon, Katherine T. (May 28, 1938). ""CHAPERONED BY THREE" NOVEL, INTERESTING PLAY". Los Angeles Times. p. A7.
^"SCREEN NEWS HERE AND IN HOLLYWOOD". New York Times. September 17, 1938. p. 20.