The Clone Wars' Umbaran story arc concludes tomorrow night with "Carnage of Krell" (Season 4 Episode 10), and we've got a Lucasfilm preview for you. You can find the StarWars.com episode guide here.
Clone Captain Rex is Forced to Confront General Krell in the Final Chapter of the Battle for Umbara
With two of his men facing execution for disobeying orders, Captain Rex is forced to confront his overly aggressive commander, General Krell in the conclusion to the action-packed battle for Umbara. Risking charges of mutiny, Rex must make a dark choice as the true face of the enemy emerges in “Carnage of Krell,” a new episode of Star Wars: The Clone Wars, airing at 8:00 p.m. ET/PT Friday, November 18th on Cartoon Network.