A drama about the clandestine race to build the world's first atomic bomb in Los Alamos, N.M., centers on a self-destructive professor who is commissioned to help lead the Manhattan Project in the series opener.

The loss of one of their own leaves the community reeling; and new security measures interfere with the work being performed by the scientists.

A development overseas re-invigorates the hunt for a spy on The Hill. Charlie and Abby make a sacrifice when the plan with Frank is threatened.

Akley becomes vulnerable when he tries to fix Thin Man's shortcomings.

Frank is offered a life-changing opportunity. At the same time, the U.S. Army put Charlie on the hot seat.