Even the best detectives get stuck during their cases. Wouldn't sleuthing be so much easier if the dead could speak to the living? Find links to all the books mentioned at shedunnitshow.com/knockknock. Become a member of the Shedunnit book club and get bonus audio, listen to ad free episodes and join a book-loving community at shedunnitshow.com/membership. Books and sources in order of appearance: —Strong Poison  by Dorothy L. Sayers —Peril at End House  by Agatha Christie —Murder Most Unladylike  by Robin Stevens —The Plague Court Murders  by John Dickson Carr —When Last I Died  by Gladys Mitchell —The Sittaford Mystery  by Agatha Christie —Dumb Witness  by Agatha Christie —"The Last Seance" in The Hound of Death  by Agatha Christie To be the first to know about future developments with the podcast, sign up for the newsletter at shedunnitshow.com/newsletter. The podcast is on Twitter, Facebook, Tumblr and Instagram as @ShedunnitShow, and you can find it in all major podcast apps. Make sure you’re subscribed so you don’t miss the next episode. Click here to do that now in your app of choice. Find a full transcript of this episode at shedunnitshow.com/knockknocktranscript. Music by Audioblocks and Blue Dot Sessions. See shedunnitshow.com/musiccredits for more details.