Lorac, the pen name of the British writer Edith Caroline Rivett.

[1][2] It is the fifth book featuring Chief Inspector MacDonald of Scotland Yard who appeared in a lengthy series of novels during the Golden Age of Detective Fiction.

[3] On a dark night on a lonely spot on the Oxford Road a body is dumped out of a motor car.

Unfortunately for the murderers MacDonald happens to be close by and leads the investigation that will eventually catch them.

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