When the notoriously eccentric Lady Winifred Westerly is invited to her cousin Claudie's wedding, she is horrified to learn that little Claudie is being forced to marry a rougé nearly three times her age. Before Freddy and her foppish cousin Dickie can spirit the bride away to safety, the abhorrent groom is murdered. Will Freddy and Dickie be able to expose the murderer, or will Freddy's strange, inquiring mind make her the next victim of the killer's art?