Peter Lorre stars as Japanese investigator Mr. Moto in "Mr. Moto in Danger Island," a 1939 release also starring Jean Hersholt, Amanda Duff, Walter Hymer, Douglas Dumbrille, and Leon Ames. Originally written as a Charlie Chan script, Moto is asked to investigate the smuggling of inexpensive contraband diamonds from South America via Puerto Rico and into the U.S. that are driving down diamond prices. One investigator has already been murdered, so it's time to send in the big guns - Moto.
A professional wrestler named Twister McGurk (Hymer), whom Moto meets en route to Puerto Rico, attaches himself to the diminutive detective, which brings some comic relief.
Entertaining with a nice tropical atmosphere despite being made on a back lot, and it's always a joy to see Peter Lorre. Unfortunately for Mr. Moto, World War II ended his run.