Aired: 1/29/1973
Polly Burton assists in soving the case of a grl found dead on a seat of an underground train.
Aired: 2/5/1973
Inspecor Lipinski investigates the theft of a 500 carat diamond.
Aired: 2/12/1973
Professor Van Dusen, the 'Thinking Machine', boasts that he can think his way out of a prison cell. When he is locked up he is given the chance to prove that he can escape by the power of his mind alone.
Aired: 2/19/1973
Laxworthy and two friends secure the safety of the plans for the first torpedo to be used by the French navy.
Aired: 2/26/1973
Valmont has to help break a ring of counterfeiters.
Aired: 3/4/1973
Lieutenant Holst of Copenhagen has to help a Russian countess who claims her brother-in-law aims to kill her.
Aired: 3/11/1973
Professor Van Dusen must find out why a young woman had a perfectly healthy finger cut off by the eminent surgeon Prescott.
Aired: 3/19/1973
In turn-of-the-century Vienna, Dagobert Trostler investigates a poison pen case.
Aired: 3/26/1973
Dr Thorndyke has to decypher a code to stop a plot to assassinate a Russian Grand Duke.
Aired: 4/2/1973
William Drew of the foreign Office investigates an unusual crime.
Aired: 4/9/1973
Charles Dallas is led into a strange and sinister adventure in the aftermath of a sensational murder trial.
Aired: 4/16/1973
Gold disappears from the strongroom of the RMS Oceanic and its purser, Mr Horrocks, tries to discover what has happened.
Aired: 5/7/1973
Hagar the Gypsy sets out to prove that Detective Sergeat Grubber is wrong about who killed Mrs Arryford.
