In the wake of Mr. William Blow’s death, his surviving relatives find themselves tangled up in family secrets and financial mystery. So when Miss Penelope Blow suddenly dies by falling out her bedroom window, suspicions are raised. With Scotland Yard under pressure to determine the widow’s fall was really accidental, Inspector Littlejohn is called in to get to the bottom of the case. But the deeper Littlejohn delves into the case, the more secrets he finds. From malice to madness, there is one possible cause. Can Littlejohn uncover the truth before another tragedy befalls the Blows?