Gordon Hessler directs this 1960s British horror starring Georgina Cookson, Gary Merrill, Jane Merrow and Neil McCallum. The wealthy Ellen Garth (Cookson) is infatuated with her husband Raymond (Merill). Unfortunately for Ellen, Raymond is only interested in her money and his eye soon roams towards her niece Alice (Merrow), with whom he enjoys a passionate affair. When Ellen finds out about his infidelity Raymond decides that the best way to free himself is to plot his wife's murder. He finds an ally in unscrupulous lawyer Richard Corbett (McCallum), but will getting the better of Ellen be less simple than the men imagine?