Sherlock and Watson investigate a series of so-called "pajama suicides.” But Sherlock suspects a female villain as cunning as Moriarty and as venomous as a spider is actually murdering London's finest so she can cash in their term life insurance policies. Holmes fakes his own death, Watson stumbles, Mrs. Hudson worries. There’s murder, fly fishing, mailman humor, and plenty of fiduciary responsibilities! Will Sherlock squish The Spider Woman? or will she trap him in her web of deceit as she pours him tea?