The time is 1942, the place is Chicago, a key scientist is brutally murdered. While in the midst of a world at war, nations are racing to harness the power of the atom and the University of Chicago is at the center of the research for the United States.

Sam Reilly plunges into a mystery taking him back to another era. After discovering a pattern of scientists who died or disappeared dating back to 1942, he travels back in time to investigate. But history is against him as he finds himself trapped in another time, alone, and hunted by a killer.