The Ipcress File was a debut sensation. Here in the second Secret File, Horse under Water, skin-diving, drug trafficking and blackmail all feature in a curious story in which the dead hand of a long-defeated Hitler-Germany reaches out to Portugal, London and Marrakech, and to all the neo-Nazis of today’s Europe. The detail is frightening but unfaultable; the story as up to date as ever it was. The un-named hero of The Ipcress File the same: insolent, fallible, capricious - in other words, human. But he must draw on all his abilities, good and bad, when plunged into a story of murder, betrayal and greed every bit as murky as the waters off the coast of Portugal, where the answers lie buried.