First show date: 18/03/1945

Last show date: 09/09/1945

Number of shows: 26

This radio murder mystery series was originally developed by Radio Station WOR (The mutual broadcasting systems flagship station in New York) as a 1945 summer replacement for The Shadow. It was syndicated and generally broadcast on Sunday evenings at 10.30pm. The shows were written by Bob Arthur and David Kogan, and directed by Jock MacGregor.

The sealed book starred Philip Clarke as the 'keeper of the book,' a croaking cackling hermit with knowledge of the black arts. Each week he would unlock the great padlock that kept the sealed book safe from prying eyes, turn the pages of the book and reveal a spooky tale. The stories were ones of murder, madness, of dark deeds, strange and terrible beyond all belief. There were only 26 episodes broadcast, running from March 18th 1945 until September 9th 1945.

A final point of note is that many, if not all of these shows, used the Mysterious Traveller scripts, all be it with different casts and a different take on the story.