Mr. Moto has himself imprisoned on Devil's Island so he can help his cellmate (Ames) escape and thereby... Peter Lorre,Mary Maguire,Henry Wilcoxon,Erik Rhodes,Harold Huber,Leon Ames,Forrester Harvey,Frederick Vogeding,Lester Matthews,John Rogers,Lotus Long,Mitchell Lewis,Carol Adams,Harry Allen,Jimmy Aubrey,William Austin,Reginald Barlow,May Beatty,Charles Bennett,Evelyn Beresford,Billy Bevan,Eugene Borden,Clyde Cook,Harry Depp,Herbert Evans,Norman Foster,Frank Hagney,Sam Harris,Leyland Hodgson,Kenneth Hunter,Noble Johnson,Tiny Jones,Colin Kenny,James Kilgannon,Adia Kuznetzoff,Eric Mayne,Paul McVey,Clive Morgan,Leonard Mudie,Pat O'Malley,Barney O'Toole,Dick Rush,Yorke Sherwood,Bruce Sidney,Leslie Sketchley,Ernie Stanton,Val Stanton,Cyril Thornton,David Thursby,Cecil Weston