|Ace paperback, 1965. Cover by Jack Gaughan.|
"The Paratime Police patrolled the vast number of alternate time-dimensions - the worlds which had branched off at every major decision in history. Their aim was to keep the many Earths from mixing and destroying each other.
But the Time cops could make mistakes and they made a big one when Calvin Morrison, a member of the Pennsylvania State Police on the Fourth Level, Europe-American, Hispano-Columbian subsector, was accidentally tossed through the dimensions and deposited in Aryan-Transpacific, Styphon's House Subsector.
The man been there only a few weeks and already he was called Lord Kalvan and was masterminding a local war that could blow the whole Paratime secret sky-high!"