A California Highway Patrolman gets involved with a smuggling ring.

The Sea Fiend, aka Devil Monster, is an American adventure film directed by S. Edwin Graham and it was shown in Great Britain as The Sea Fiend in 1938. An edited version of the film was released in 1946 as Devil Monster, a low-budget South Seas drama spiced up with stock footage inserts including half-dressed native girls that were also featured in the film's trailer.

A father leaves his native Ireland and travels to America to visit the son he hasn't heard from in many years.