Four adventurers find themselves at Carcasilla, earth's last citadel, a billion years from now. It is there that the mutated remains of humanity are making their final stand.
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First magazine publication: Argosy, April 1943-July 1943
First book publication: Ace Books, 1964
From the pages of Startling Stories and science fiction's Golden Age... Here are three magnificent novels of alternate time streams and fantastic worlds, of ordinary men and women who, by some fluke, are torn from the earth we know to land in parallel worlds where genetically altered monsters
Out of the infinite depths of interstellar space, a new planet moved in towards the sun...and stayed, between Earth and Venus. Xenephrene, as it was named, made a pretty vision in the evening sky - until flying things and strange visitants appeared. Xenephrene was inhabited...and its inhabitants
