Season Finale Part 1: "Space Oddity" - Sunday, Aug. 31, at 9 p.m. (ET/PT) - TV-14-LV
Tom's mission to destroy the Espheni Power Core is complicated by Lexi's return. Lexi is forced to take extreme measures to save her father's life - and her own - after a Beamer malfunction. Meanwhile, the 2nd Mass fears an impending Espheni strike by the scorched Overlord. Treva Etienne guest-stars.
Directed by Olatunde Osunsanmi
Written by M. Raven Metzner
Created by Robert Rodat