Used paperback in good condition. Spine showing average wear, rest of cover and pages show minimal wear. Rubber stamp on flyleaf, ink signature on title page. 222 pages. Published by Corgi Books, 1963. ISBN n/a.

The gripping novel tells the story of some of the "back-room boys" during World War II: men who tirelessly struggled to reveal the secrets of German mines, booby-traps and bombs; who worked on the development of new weapons, living close to death and striving in the cause of death all day long.

Some of them saw their efforts rewarded. Some of them died. All of them knew fear.