1A Message from the Deep Sea
This episode features Dr Thorndyke, played by John Neville, who is first a medical man and second a solver of mysteries. A young girl has been murdered in her boarding house and the solution looks obvious - but is it? Neville plays the sleuth with aplomb and this is a strong opening episode. The character is arrogant, capable, and likable - and of course his intelligence makes his police colleagues and/or adversaries look like idiots!
2The Missing Witness Sensation
Max Carrados, the blind detective, solves the case of a bank teller shot at his counter.
3The Affair of the Avalanche Bicycle and Tire Co.
Horace Dorrington solves the mystery of a case of sabotage on a bicycle track.
4The Duchess of Wiltshire's Diamonds
Simon Carne devises an ingenious way of keeping the Duchess of Wiltshire's diamonds safe from theft.
5The Horse of the Invisible
Carnacki solves the case of an invisible horse that is haunting a family of the eve of a wedding.
6The Case of the Mirror of Portugal
Horace Dorrington clears up the mystery of the theft of a valuable diamond.
7Madame Sara
Dixon Duce helps solve a murder case.
8The Case of the Dixon Torpedo
Jonathan Pride gets involved in a case involving a secret weapon, an eccentric inventor and forged roubles.
9The Woman in the Big Hat
Lady Molly of Scotland Yard solves the murdeer of a respectable man.
10The Affair of the Tortoise
Arhtur Hewitt gets mixed up in a case involving voodoo and the disappearance of a dead body.
11The Assyrian Rejuvenator
Conman and invesigator Romney Pringkle exposes a swindle and makes a profit.
12The Ripening Rubies
Bernard Sutton is called in to help stop a series of jewel robberies.
13The Case of Laker, Absconded
Arthur Hewitt and Jonathan Pride band together to find a bank clerk who has disappeared with £ 15,000.