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Isle of Forgotten Sins (1943)

Passed | | Action, Adventure, Drama | 15 August 1943 (USA)
The owner of a seedy dive and brothel on a South Seas island meets two treasure hunters looking for a sunken ship with a $3-million cargo of gold. She persuades them to let her in on the ... See full summary »


Edgar G. Ulmer


Edgar G. Ulmer (story), Raymond L. Schrock (story and screenplay)

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Complete credited cast:
John Carradine ... Mike Clancy
Gale Sondergaard ... Marge Willison
Sidney Toler ... Capt. Krogan - aka Carruthers
Frank Fenton ... Jack Burke
Veda Ann Borg ... Luana
Rita Quigley ... Diane
Rick Vallin ... Johnny Pacific
Tala Birell ... Christine
Patti McCarty Patti McCarty ... Bobbie Nelson
Betty Amann ... Olga
Marian Colby Marian Colby ... Mimi
William Edmunds William Edmunds ... Noah - Native Chief (as William Edmonds)


The owner of a seedy dive and brothel on a South Seas island meets two treasure hunters looking for a sunken ship with a $3-million cargo of gold. She persuades them to let her in on the deal. Complications ensue because of intrigue, double-crosses and an approaching violent monsoon. Written by frankfob2@yahoo.com

Plot Summary | Add Synopsis


Tidal wave of torrid romance and thrills in the South Seas!


Passed | See all certifications »






Release Date:

15 August 1943 (USA) See more »

Also Known As:

Monsoon See more »

Company Credits

Production Co:

Atlantis Pictures See more »
Show more on IMDbPro »

Technical Specs


| (2004 National Film Museum Incorporated print ) | (copyright length)

Sound Mix:

Mono (RCA Sound System)

Aspect Ratio:

1.37 : 1
See full technical specs »

Did You Know?


The earliest documented telecasts of this film took place in New York City Wednesday 6 October 1948 on WATV (Channel 13) and in Los Angeles Tuesday 29 August 1950 on KTLA (Channel 5). See more »


The sky in back of a boat, an obvious backdrop, has visible creases. See more »


Marge Willison: Cut it! I said cut it or I'll throw you both out! If you want to maul each other, do it when there's no boat in port. Understand?
See more »


Featured in It Came from Hollywood (1982) See more »


Sleepy Island Moon
(1943) (uncredited)
Music and Lyrics by Leo Erdody and June L. Stillman
Sung by Veda Ann Borg
See more »

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User Reviews

Charlie goes bad
16 November 2018 | by st-shotSee all my reviews

Mid stream in his Charlie Chan gig Sidney Toler switches to villainy as Captain Krogan in this B clunker pasted together by cult favorite Eddie Ulmer. His absolutely vile character here ironically contributes to the film's entertainment as he eschews the meditative detective role he is so famous for in favor of leering greedy degenerate.

South Seas adventurer Mike Clancy (John Carradine) blows into town to see his brothel running honey (Gale Sondergard) when he gets word there's a 3 million dollar booty at the bottom of the sea that the shady Captain Krogan knows where it is but unable to access without Clancy's diving expertise. They enter into a deal with Krogan who intends to double cross. The madam and her band of hookers also go along to both complicate the deal and improve the scenery.

Isle of Forgotten sins is no Hurricane (39) but it does have a rousing tsunami to Deus ex Machina matters and a cast of unrepentant greedy characters wrapped up in the glitter of gold from the perverse captain to the bevy of hookers with flowers in their hair. Ulmer offers a couple of slight of hand moves and snappy dialogue to get around censors but the lobby cards for this piece of flotsam and jetsam featuring babes in sarongs and the leering desires of Toler is probably where the real genius was to be found.

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