The trinity paradox

Dropped through time by accident, a woman who had been protesting nuclear weapons lands in 1943 at Los Alamos, the secret mesa where J. Robert Oppenheimer and the Manhattan Project scientists race to build the atomic bomb. Her unexpected arrival alters the course of events, and the shift gives Nazi Germany a boost in its own bid to build the weapon first. The novel follows the question of which nation will reach the bomb first, now that the timeline has been disturbed.

Kevin J. Anderson is an American author known for science fiction and for his many media tie-in novels, including works set in the Star Wars and Dune universes. This book blends time travel with alternate history, using a real wartime research effort as its backdrop.