While on vacation in England a young American woman (Elizabeth Taylor) meets and later marries a British military officer (Robert Taylor) who turns out to be a Soviet spy. He is too deeply in with the Soviets whose agents liked him better when he was single and instruct him to get rid of her. There is not much of a sense of peril generated, but the film develops a fair degree of tension when Elizabeth Taylor's character discovers the truth about her husband, as the Soviets warned him she would. The crux of the film seems to deal more with his emotional needs that conflict with his Marxist political ideals, though those ideals and the whole existence of being a spy and traitor to one cause while being coldly manipulated by agents of the other could have been done more convincingly (see The Spy Who Came In From The Cold) or one of Carol Reed's tortured espionage tinged films. Nonetheless, it's a pretty decent part for Robert Taylor while somewhat shortchanging Elizabeth's.
Review of Conspirator
