Keith Laumer 
Other Side of Time 

BLINDING LIGHT, NOISE BEYOND SOUND — A JOURNEY INTO NOTHINGNESS…Imperial Intelligence Agent Brion Bayard was catapulted into nothingness by an unknown force and woke to find himself in a universe not his own. Surrounded by hulking, cannibalistic ape men who called themselves Hagroon, Bayard was soon entrapped in a web of time lines. He found himself running from the Hagroon into the arms of Dzok, the educated monkey man of Xonijeel; transported by Dzok to a universe where Napoleon the Fifth was in power and left there to the tender powers of the beautiful witch Olivia; struggling with the bonds of a fictitious past, always striving to regain his lost universe of Zero-zero Stockholm so he could bring the warning which might save his world from sudden, violent death…