Aidan from Mysteries Ahoy! briefly explains what a locked room mystery is and what its distinctive elements are.

Books for adults referenced in this episode:

The Black Spectacles by John Dickson Carr

The Adventure of the Speckled Band by Sir Arthur Conan Doyle (a short story in The Adventures of Sherlock Holmes)

Books for middle grade readers referenced in this episode:

The Mystery of the Disappearing Cat by Enid Blyton

First Class Murder by Robin Stevens