Arthur and Margaret Pearson are a quiet little suburban couple who inherit fifty thousand pounds when a relative dies. They tentatively invest it in property with the questionable Edward Cox. Arthur is in fact two-timing his wife with a mistress called Joy and is planning to take off but then disaster strikes as Edward is revealed as a con artist who has gone off with all the money. But is he the only one and may he not have an accomplice playing the same game as Arthur?