British armaments are being sabotaged, and the list of suspected culprits is worldwide. Department Z, and the British Government, find it difficult even to find a motive. But gradually the evidence points towards America, and the agents become increasingly baffled as tension between the two countries increases to a dangerous pitch.

Secret Service agent, Gordon Craigie, faces a powerful madman with a devastating scheme for global murder in this gripping Department Z detective novel, Carriers of Death.