A fiancee goes to great length to get out of her impending marriage in this British made-for-television movie, which is based on the play of the same name. Elizabeth McGovern stars as a woman about to get married, who meets her one true-love -- who is not her fiancé -- and devises a murderous plot to get rid of her groom-to-be.

Just days before her wedding, Beatrice-Joanna has a chance encounter with Alsemero, and realizes that she has met her one true love. To marry the man she loves, she persuades the love-struck henchman De Flores to murder her fiance, but does not anticipate the tragic consequences of her actions.