A World War II thriller by a multimillion-selling, Edgar Award-winning author. As plans for D-Day loom large, the agents of Department Z--a secret detective unit within British intelligence--are working overtime to halt the leaking of intelligence to Berlin. Meanwhile, three cousins undertake their own covert operation: meeting in a cottage in Guildford to discuss a dark family matter in secret. As these two seemingly unrelated events collide, the cousins are drawn along a secretive trail that leads to a powerful spy ring. The team faces a race against the clock, as they fight to infiltrate this tight-knit organization--or risk devastating consequences . "Following closely on the heels of history, and sometimes a little ahead of it, Mr. Creasey and Department Z are busy preventing someone from putting a spoke in the wheels of the Allied invasion of Europe." --Evening Chronicle.