From Amazon.com
Something inhuman and lethal is loose in detective Henry Carmaggio's city. It's a monster, all right -- a member of a master race from a parallel Earth, and unless Henry can track it down, it's going to bring its friends.
From Booklist
It is four centuries after the ending of Stirling's previous novel of the Draka Domination,
The Stone Dogs (1990). An accident with an experimental stardrive flings a genetically tailored Draka warrior, Gwendolyn Ingolfsson, across universes and time into contemporary New York City. Kenneth Lafarge, a secret agent for those who fled the Draka, comes to Earth in pursuit of her. Caught in the cross fire are New York cop Henry Carmaggio and his lover, investment counselor Jennifer Feinbaum. The Draka's plan is, very simply, to open an interdimensional gate and bring in a Draka army to conquer Earth. Defeating this cheerfully bloodthirsty scheme involves nonstop action and Stirling's usual wealth of technical detail, wry wit, and superlatively drawn female characters, not the least of them the appalling Ms. Ingolfsson.
Roland Green