Fact catches up with fiction when the secret of telepathic communication is discovered. But the device at the centre of the mystery is in the possession of two schoolboys and whether they stole it or invented it, there are powerful interests who will kill to get hold of it. Albert Campion faces as deadly a challenge as any in his career.
Margery Allingham was born in London in 1904. Her first novel was published when she was seventeen. In 1929 she published The Crime at Black Dudley and introduced the character who was to become the hallmark of her writing - Albert Campion.