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!

Max Carrados, the blind detective, solves the case of a bank teller shot at his counter.

Carnacki solves the case of an invisible horse that is haunting a family of the eve of a wedding.

Dixon Duce helps solve a murder case.

Arthur Hewitt and Jonathan Pride band together to find a bank clerk who has disappeared with £ 15,000.