Colonel March and his department investigate strange cases that stump Scotland Yard and the British police.
EPISODE 1
The Sorcerer
Colonel March is called into investigate the murder of a psychiatrist who had been threatened by the husband of a patient.
EPISODE 2
Present Tense
March's niece believes in spiritualism so when she hears her dead husband's voice and the sound of him playing the piano she believes he has returned.
EPISODE 3
At Night All Cats Are Gray
A French fashion model is found murdered and dressed in mismatched colours hours after she reached out to Colonel March claiming she was being followed.
EPISODE 4
The Abominable Snowman
Members of the Himalayan Mountaineering Club are threatened by what appears to be an abominable snowman.
EPISODE 5
The Headless Hat
Colonel March's search for a mysterious character known only as Monsieur Z takes him to a waterfront nightclub.
EPISODE 6
The Second Mona Lisa
Two Mona Lisa paintings appear on the art market at the same time, both claiming to be a second painted after the original, and Colonel March is recruited to help determine which is the real deal.
Boris Karloff
Ewan Roberts
Charles De Latour
John Dickson Carr