Manhattan: Sneak Peek at Season 2 (PHOTOS)

It's time to return to Los Alamos and nuclear uncertainty: WGN America's Manhattan returns on Tuesday, October 13 at 9/8c. Here, a sneak peek at scenes from Season 2.

William J. Camp as William Hogarth and Ashley Zukerman as Charlie Isaacs.

Harry Lloyd as Paul Crosley

Christopher Denham as Jim Meeks

Ashley Zukerman as Charlie Isaacs

Rachel Brosnahan as Abby Isaacs and Katja Herbers as Helen Prins

Olivia Williams as Liza Winter and Jefferson L. White as PFC Cole Dunlavey

Olivia Williams as Liza Winter

Ashley Zukerman as Charlie Isaacs and Katja Herbers as Helen Prins

Katja Herbers as Helen Prins

Olivia Williams as Liza Winter and Jefferson L. White as PFC Cole Dunlavey, with patrons in the diner

Rachel Brosnahan as Abby Isaacs

John Benjamin Hickey as Frank Winter

Harry Lloyd as Paul Crosley and Mamie Gummer as Nora

Michael Chernus as Louis "Fritz" Fedowitz

The gadget looms large over Season 2