Invisible Weapons

Invisible Weapons
First edition
AuthorJohn Rhode
LanguageEnglish
SeriesLancelot Priestley
GenreDetective
PublisherCollins Crime Club (UK)
Dodd Mead (US)
Publication date
1938
Publication placeUnited Kingdom
Media typePrint
Preceded byProceed with Caution 
Followed byThe Bloody Tower 

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