Following the death of her beloved fiancé Roderick, Miss Danby is hounded relentlessly by Dr. Slanton who wants to marry her to access her inheritance. Then one morning, Aileen, the sister of the deceased who lives with her, discovers the doctor's body in the woods near the cottage, and Miss Danby becomes the prime suspect. Although she claims innocence, she refuses to give the details which could prevent her from going the gallows. Aileen and her lover as well as Inspector Trant, who knew Aileen's father years ago, join forces to clear her name. The only clue they have is the word "whispering" uttered by the victim before he died!! - Summary by Celine Major