Blackout Memo. A London Wartime Thriller - Gordon J. MacKenzie

London, 1940. Under blackout sirens and bombing raids, a quiet Admiralty clerk notices something wrong with a convoy order: one line, retyped, just "off" enough to send ships into a killing zone.

Evelyn Shaw should file it and forget it. Instead, she asks one question too many and steps into a hidden war fought with paper, seals, and orders that decide who lives and who vanishes. When a body turns up under a stairwell lamp and an internal security captain starts cleaning the trail, Evelyn is forced into the city's shadows with an injured operative and a dockside mechanic who knows how to survive when the rules stop working.

As the Thames burns and convoy routes shift in the dark, Evelyn races to get the truth on record before it's burned, buried, or rewritten. Because in wartime London, the most dangerous weapon isn't a gun. It's a memo.