Invisible Weapons

First edition
Author	John Rhode
Language	English
Series	Lancelot Priestley
Genre	Detective
Publisher	Collins Crime Club (UK) Dodd Mead (US)
Publication date	1938
Publication place	United Kingdom
Media type	Print
Preceded by	Proceed with Caution
Followed by	The Bloody Tower

Invisible Weapons is a 1938 detective novel by John Rhode, the pen name of the British writer Cecil Street.^[1] It is the twenty eighth in his long-running series of novels featuring Lancelot Priestley, a Golden Age armchair detective.^[2] A locked room mystery, the title revolves around the fact that two murders are committed by apparently invisible methods.

In suburban London, a man named Fransham is found dead after going to wash his hands in his niece's bathroom, an apparently locked room. The circumstances baffle the investigating officers of Scotland Yard until Priestley takes up the case, connecting it with another seemingly unrelated death.

• Evans, Curtis. Masters of the "Humdrum" Mystery: Cecil John Charles Street, Freeman Wills Crofts, Alfred Walter Stewart and the British Detective Novel, 1920-1961. McFarland, 2014.
• Herbert, Rosemary. Whodunit?: A Who's Who in Crime & Mystery Writing. Oxford University Press, 2003.
• Reilly, John M. Twentieth Century Crime & Mystery Writers. Springer, 2015.

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