E1 · You 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.
E2 · The 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.
E3 · The 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.
E4 · Last Reasoning of Kings
The arrival of a high-profile guest shakes things up. Frank is haunted by his past.
E5 · A New Approach to Nuclear Cosmology
Frank clashes with Charlie to protect Babbit, who has become the subject of an investigation.
E6 · Acceptable Limits
Frank seeks medical answers; Charlie and Helen travel to survey an off-site reactor.
E7 · The New World
Helen and Charlie deal with a crisis; Abby embarks on a journey of self-discovery.
E8 · The Second Coming
Both Charlie and Frank face serious questions as to the future of their projects.
E9 · Spooky Action at a Distance
Frank and Charlie hatch a plan.
E10 · The Understudy
An unexpected visitor arrives on the Hill.
E11 · Tangier
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.
E12 · The Gun Model
Akley becomes vulnerable when he tries to fix Thin Man's shortcomings.
E13 · Perestroika
Frank is offered a life-changing opportunity. At the same time, the U.S. Army put Charlie on the hot seat.
