France, 1943.
Every radio transmission is a risk.
Every ally is a question.

When British intelligence parachutes Margaret "Maggie" Hale into occupied Lyon, her mission is simple: restore contact with the French Resistance and prepare the ground for liberation. What she finds instead is a city already watched, a network already compromised, and an ally that may be more dangerous than the enemy.

As arrests follow transmissions with terrifying precision, Maggie and Resistance leader Étienne Morel uncover a truth neither side wants to admit: London is still talking to a network that should already be dead. Someone is listening. Someone is answering. And someone is being sacrificed to keep the war on schedule.

Hunted by a patient Gestapo strategist who prefers traps to raids, Maggie is forced to choose between obedience and survival-between becoming another clean file in an archive, or turning the machinery of espionage against itself.

Set in the shadowed streets and hidden passages of wartime Lyon, Dead Frequencies is a gritty, uncompromising World War II thriller about invisible wars, moral collapse, and the terrible cost of being useful.

Because in this war, silence is not defeat.
It's the only way to live.