Something is wrong. Lovely young lady Sophie Kyle fears her handsome fiancé Lord Randal is having a change of heart about their upcoming marriage. Why else would the once notorious rake respond to Sophie's playful flirtations with a stuffy "Behave yourself"? Tensions grow as the wedding day approaches and anonymous threatening letters arrive at the castle. Dark shadows from the past seem to haunt the bride-to-be while she grows most anxious about her future. And as the guests gather to witness the ceremony that will unite the uncertain pair, they become players in a frightening drama of mystery and intrigue ... as well as in a dangerous test of love.