Compos Mentis Productions
The Sign of Three

The Sign of Three

2026 Dieselpunk noir espionage thriller

The Sign of Three

A dieselpunk noir espionage thriller set in an alternate 1930s London.

She's a riddle... Wrapped in a mystery... Inside... an enigma.

The Casebook of Morgan Elliot: The Sign of Three is a dieselpunk noir espionage thriller set in an alternate 1930s London, where jazz, danger, and political extremism move through the fog like perfume and poison.

Morgan Elliot, a disgraced military codebreaker turned private investigator, is pulled into a murder case that exposes a conspiracy involving stolen Tesla weapon plans, three missing Enigma rotors, and men powerful enough to start the next world war.

Hunted by police, manipulated by British intelligence, and targeted by Russian nationalist George Kornilov, Morgan must outwit every faction closing in around her. But in a city where everyone lies for money, love, or survival, the only thing more dangerous than the secret itself is the woman clever enough to break it.