Quest Crosstime
Quest Crosstime is also known as Crosstime Agent.
The universe had opened up for Blake Walker when he discovered that his world - our own Earth - was just one of hundreds ranked side by side on alternate timelines, each more strange and wondrous than the other, all coexisting at once, and all available to Blake Walker and the few natives of those other-Earths who could break the barriers between timelines.
But Blake's new existence is threatened now - his time-traveling patron's daughter has been kidnapped. The engineers who could control the time-travel process are in open rebellion. And Blake himself has stumbled across a plot by a powerful and dangerous band of conspirators to ravage all the Earths in their reach.
Blake must stop them. He knows that somewhere in the infinity of time there lies the key to solving this crisis. If he only knew when to look.
Andre Norton
Andre Alice Norton (1912-2005) was an American science fiction and fantasy author (with some works of historical fiction and contemporary fiction) under the noms de plume Andre Norton, Andrew North and Allen Weston. Norton published her first novel in 1934, and was the first woman to receive the Gandalf Grand Master Award from the World Science Fiction Society in 1977, and won the Damon Knight Memorial Grand Master Award from the Science Fiction and Fantasy Writers of America (SFWA) association in 1983.
Crosstime
Crosstime is also known as Blake Walker.
Crosstime consists of two primary books, and includes one additional book that complement the series but is not considered mandatory reads. The current recommended reading order for the series is provided below.