1948 - The Second World War has ended, but the next one is already being written in invisible ink. When Britain's leading radar physicist, Dr Lionel Brooke, disappears on the eve of a secret defence demonstration, the Ministry fears Soviet abduction. To recover him, Jack Falcon of Department 7 is dispatched into the new shadowlands of Europe-Berlin, Lübeck, Peenemünde-where science and ideology are the new weapons of choice. With his loyal partners Billy "Sparks" Devlin and Dr Evelyn Drake, Falcon uncovers Project Echo-a radar network that could make every nation naked to its enemies. But Brooke's disappearance is only the beginning. What begins as a rescue mission becomes a race against the birth of a new kind of warfare-one fought not with bullets, but with signals, lies, and ghosts.

Cold War espionage. Post-war intrigue. One man against the silence between nations.