The Ipcress File was Len Deighton's first novel, his first huge bestseller and the book that broke the mold of thriller writing.

For the working-class narrator, an apparently straightforward mission to find a missing biochemist becomes a journey to the heart of a dark and deadly conspiracy.

The film of The Ipcress File gave Michael Caine one of his first and still most celebrated starring roles while the novel has become a classic.