Timeshift is published by Engine House Books with the ISBN 978-1-936211-03-6.
Timeshift is available as a softcover only, and you should be able to order it from your favorite bricks-and-mortar book shop or online from:
For prices from multiple online stores, you can search at Bookfinder4u.
The recommended retail price is $22.50.
The story
Four hundred years in the future, two superpowers have carved up the galaxy and share an uneasy truce. But the Union launches a clandestine mission to kill the Empire's leader, setting in motion a train of events that leads to a revelation that will forever change the balance of power. In response, the Empire unleashes the ultimate weapon, propelling a Union spy into a timestream populated by only one other person: a young physicist from a backward planet he calls Earth, who is desperate to find a way to return to normal time.Sample
You may like to read a sample in PDF format.