Finity

From back cover Tor paperback December 1999: VERTIGO! Lyle Peripart's world is coming apart. Up to just a few days ago he was an obscure professor, quietly unenthusiastic about the Reichs that have dominated the world since the Axis victory over a century ago -- but not looking for a fight with anyone. Then Lyle was recruited for private industry by the mysterious industrialist Geoffrey Iphwin -- and that's when everything stopped making sense. His mild-mannered fiancee turns out to be a gun-toting weapons expert who grew up in a world in which America surrendered to the USSR in the 1970s.…