The Secret Visitors.
(Ace D-237, August 1957: doubled with Master of Life and Death
by Robert Silverberg.
Dr. Lockhart encounters an old man in Paris, one of thirty-odd
'dying grandfathers' who commit suicide rather than answer the simplest
questions about themselves or their origins. Lockhart has
been retained by the World Security Organization to find some connection
between these men and the threat of nuclear war hanging over the
world. Before dying, this broken down old boulevardier 'converses'
with him in a language not available on the Berlitz syllabus. Then
things go galactic. The Interstellar Tourist Agency is organizing
package holidays to terrible, decadent Terra as part of its fell
scheme against the Galactic Federation. A bit like the 1956
film version of Raymond F. Jones 1952 fix-up novel, This Island
Earth -- only different.
Synopsis by Graham Andrews
NEW WORLDS Nos 52-54,October-December 1956 3-part Serial Novel
titled Tourist Planet.
First Book publication:
Ace Pocketbook D-237, August 1957, retitled The Secret Visitors.
Digit Books No R479, June 1961
Ace Pocketbooks G-675, 2nd ed, December 1967
White Lion, London-New York, ISBN 85617 567 6, April 1974
HAPNA, May to August 1958 as Touristplaneten
Terra Utopische Romane No 7, 1958 as Die Auberidischen
FUTURIA No 2, Lira 200, mid-1965 as Il Visitatori Occulti
Terra Extra No 149, 80phg, August 1967 as Die Auberidischen
Erich Pabel Verlag No 1, DM80, February 1979 as Die Auberisischen