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Producer/director W. Lee Wilder, the prolific (and somewhat less talented) brother of filmmaker Billy Wilder, was responsible for the 1968 melodrama The Omegans. Artist Lucien Pan is insanely jelous of his wife Ingrid Pitt. While participating in a Malayan expedition, Pan suspects that Ingrid is carrying on with jungle guide Keith Larsen. He plots the murder of both wife and guide, hoping to make it look like an accident. To this end, Pan talks Ingrid and Larsen into posing for a portrait-right next to a radioactive jungle river.