An American realtor living in England is dissatisfied with what he believes to be his humdrum life. One weekend while his wife is out of town, he gives a ride to a woman he sees stranded on the road. One thing leads to another, and he soon finds himself enmeshed in a plot involving a diamond robbery, gangsters and murder.
Though it is short and sweet, Cy Endfield still struggles with this slightly contrived British murder/mystery. The rather wooden Arthur Kennedy ("Curtis") meets the glamorous "Lila" Constance Smith) in an hotel bar whilst his wife "Elizabeth" (Joy Shelton) has gone away for the weekend. After what seems like the briefest of introductions, he forgets any semblance of the sanctity of his marriage vows and as a result gets tangled up with some murderous diamond smugglers before a predictable ending. It's not a great example of the genre, more a rather stodgily paced vehicle for a visiting American star.