Time Waits - Out of Time, #1

On the run from his former allies in 1943, Janos Nagy's life is turned upside down when he stumbles through a mysterious doorway and finds himself in the hands of the Temporal Research Institute, a covert organization that verifies historical events through time travel. The year, he is told, is 2041. Wounded, exhausted, and helpless, he's in a time he doesn't know and a world that has changed beyond his wildest imagination.
Dieter Schmidt, one of the TRI linguists and historians, offers his aid in making sense of this strange new existence. But Janos's arrival has broken the TRI's prime rule of non-interference. It's not long until someone in the TRI decides that if the rule can be broken once.well, why not break it again?