After the publication of "Casino Royale", Fleming used his annual holiday at his house in Jamaica to write another Bond story. Twelve Bond novels and two short-story collections were published between 1953 and 1966, the last two ("The Man with the Golden Gun" and "Octopussy and The Living Daylights") posthumously. Much of the background to the stories came from Fleming's previous work in the Naval Intelligence Division or from events he knew of from the Cold War. The plot of "From Russia, with Love" uses a fictional Soviet Spektor decoding machine as a lure to trap Bond; the Spektor had its roots in the wartime German Enigma machine. The novel's plot device of spies on the Orient Express was based on the story of Eugene Karp, a US naval attaché and intelligence agent based in Budapest who took the Orient Express from Budapest to Paris in February 1950, carrying papers about blown US spy networks in the Eastern Bloc. Soviet assassins already on the train drugged the conductor, and Karp's body was found shortly afterwards in a railway tunnel south of Salzburg.