Forbidden (1949 film)

Forbidden aka Scarlet Heaven is a 1949 British thriller film, directed by George King, and starring Douglass Montgomery, Hazel Court and Patricia Burke. The film was produced by George King for Pennant Picturens, and was the last directorial assignment for King, and the final screen appearance by Montgomery.

Diana finds out about Jims affair and visits Jane at home, revealing Jims married status, trying to convince her that Jim is a serial philanderer and Jane is only the latest in a succession of young women he has targeted, and offering her cash to end the relationship. Jane refuses to be bought off and confronts Jim, who protests that he is caught in an intolerably unhappy marital situation with a selfish, unscrupulous woman. Jim then faces up to Diana and demands a divorce, which she refuses out of hand.In desperation, Jim determines that the only way out of the mess is to kill Diana. Aware of her addiction to multiple medications, he uses his knowledge to concoct some pills containing a lethal dose which he slips amongst her habitual supply. Then having second thoughts, he hurries home but finds Diana already dead. In a panic he buries her body beneath the floorboards in his workshop, only to discover later when clearing up in the bedroom that the deadly pills he made up are untouched Diana in fact has died of natural causes and Jims disposal of her body has been unnecessary and incriminating. ........

Source: Wikipedia