Coded documents revealing the identities of every UNACO agent have been stolen, putting every agency life at risk. The ransom is huge but the criminal mastermind is also threatening to launch nuclear missiles if UNACO refuse to cooperate. With the clock ticking, can UNACO survive? One of the UNACO series of international thrillers, featuring an elite team of special agents. Reissued in conjunction with with a major repackaging of the key MacLean backlist titles, re-establishing MacLean as the UK's foremost writer of thrillers and wartime adventures.