1You Always Hurt the Ones You Love
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.
2The Prisoner's Dilemma
Frank attempts to save his team, and pays the price; at the same time, the wives get creative trying to make life on the Hill more interesting.
3The Hive
The loss of one of their own leaves the community reeling; and new security measures interfere with the work being performed by the scientists.
4Last Reasoning of Kings
The arrival of a high-profile guest shakes things up. Frank is haunted by his past.
5A New Approach to Nuclear Cosmology
Frank clashes with Charlie to protect Babbit, who has become the subject of an investigation.
6Acceptable Limits
Frank seeks medical answers; Charlie and Helen travel to survey an off-site reactor.
7The New World
Helen and Charlie deal with a crisis; Abby embarks on a journey of self-discovery.
8The Second Coming
Both Charlie and Frank face serious questions as to the future of their projects.
9Spooky Action at a Distance
Frank and Charlie hatch a plan.
10The Understudy
An unexpected visitor arrives on the Hill.
11Tangier
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.
12The Gun Model
Akley becomes vulnerable when he tries to fix Thin Man's shortcomings.
13Perestroika
Frank is offered a life-changing opportunity. At the same time, the U.S. Army put Charlie on the hot seat.