Tears in the Fabric of Time — Stuart G. Yates

Inspector ‘Tiny' Tears is ready for retirement when the most unusual case lands on his desk. A young girl sits in the interview room while the uniformed man who followed her lies dead.

After the girl escapes from custody, Tears pursues her and steps into a world that is similar to ours, but shockingly different in several ways. They soon learn of a mysterious group called the Silencers, and the Transference Engine which has irreparably damaged the fabric of space and time.

As the anomalies get stronger, Tiny and Ana form a grudging bond and set on a quest to find a way to undo the catastrophe before the Silencers invade our world.