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The fourth season of Star Wars: The Clone Wars, also known as Battle Lines, consists of twenty-two episodes. It premiered on September 16, 2011 with "Water War" and concluded on March 16, 2012 with "Revenge."

Episodes Edit

401 WW

4.01 | September 16, 2011
Written by: Jose Molina | Directed by: Duwayne Dunham
When the king of Mon Cala is assassinated, talks break down between the Mon Calamari people and the Quarren, co-inhabitants of the aquatic world. To stop a civil war, the Republic sends Padmé Amidala and Anakin Skywalker, but unbeknownst to them, the Quarren are already being backed by the Separatists. Now the Jedi must protect Mon Cala's new leader, the young Prince Lee-Char, from the attack.

402 GA

4.02 | September 16, 2011
Written by: Jose Molina | Directed by: Duwayne Dunham
Anakin Skywalker and the rest of his Jedi team have been overrun by the Separatist surprise attacks led by Riff Tamson while Prince Lee-Char and Ahsoka must evade capture on their own. Unable to summon more Republic aid, Yoda calls upon the help of the powerful and amphibious Gungan Grand Army, but whether they will be enough to stop the Separatist siege is uncertain. An incensed Tamson doubles his efforts in tracking down Prince Lee-Char, unleashing the reinforcements given to him by Count Dooku in an assault that churns the oceans.

403 P

4.03 | September 23, 2011
Written by: Jose Molina | Directed by: Danny Keller
The Republic and Gungan forces have been captured by Riff Tamson and his Karkarodon enforcers. Now, it is up to Ahsoka and the young Prince Lee-Char to unite the fractured people of Mon Cala and drive out the Separatist invaders.

404 SW

4.04 | September 30, 2011
Written by: Daniel Arkin | Directed by: Brian Kalin O'Connell
When the leader of the Gungans, Boss Lyonie, is injured it's discovered there is an uncanny resemblance between the Boss and Jar Jar Binks. Binks must sway his people from rising against the Naboo and stopping a Separatist invasion led by General Grievous.

405 MM

4.05 | October 7, 2011
Written by: Bonnie Mark | Directed by: Danny Keller
After groundquakes have devastated the planet Aleen, a Republic relief effort arrives, including the droids R2-D2 and C-3PO. When the native Aleena's pleas go unheard, it becomes the duty of the droids to embark on a surreal journey through Aleen's subterranean world to save the planet.

406 ND

4.06 | October 14, 2011
Written by: Steve Mitchell & Craig Van Sickle | Directed by: Steward Lee
C-3PO and R2-D2's bizarre caper continues. Forced to escape a Separatist attack in a Y-wing fighter, the droids visit the world of the Patitites, the odd planet Balnab, and the inside of a pirate warship where they are forced to fight in a gladiatorial arena.

407 DOU

4.07 | October 28, 2011
Written by: Matt Michnovetz | Directed by: Steward Lee
When Anakin is forced to temporarily turn over command of his clone troopers to a new commander, the Jedi Pong Krell, tensions begin to run high as the clones are assigned with a very deadly mission to take the capital of Umbara.

408 TG

4.08 | November 4, 2011
Written by: Matt Michnovetz | Directed by: Walter Murch
General Krell orders Captain Rex and the clone troopers of the 501st Legion to conquer a heavily fortified Umbaran airbase, and will not accept anything less than victory. It is an almost certain suicide mission, unless the clones can use their ingenuity to defeat their new enemy.

409 POD

4.09 | November 11, 2011
Written by: Matt Michnovetz | Directed by: Kyle Dunlevy
After the Republic conquers an Umbaran airbase, General Krell orders Rex and his men on towards the heavily fortified capital. Realizing there's a better plan, several clone troopers disobey orders to carry out a rogue, covert operation.

410 COK

4.10 | November 18, 2011
Written by: Matt Michnovetz | Directed by: Kyle Dunlevy
With two of his men facing execution for disobeying orders, Captain Rex must confront his overly aggressive commander, General Krell. Risking charges of mutiny, Rex must make a dark choice as the true face of the enemy emerges.

411 K

4.11 | November 25, 2011
Written by: Henry Gilroy | Directed by: Kyle Dunlevy
Zygerrian slavers are behind the sudden disappearance of an entire colony of people on the planet Kiros. As Anakin and Ahsoka rush to defuse a series of bombs planted by the slavers, Obi-Wan must fight with their imposing leader.

412 SOTR

4.12 | December 2, 2011
Written by: Henry Gilroy | Directed by: Brian Kalin O'Connell
To locate the missing colonists, Anakin, Obi-Wan and Ahsoka go undercover to infiltrate the slavers on Zygerria. Anakin struggles with his emotions as a wily Zygerrian queen forces him to take questionable actions in order to carry out his mission.

413 EFK

4.13 | January 6, 2012
Written by: Henry Gilroy | Directed by: Danny Keller
Anakin tries to convince the Zygerrian Queen that she too is a slave and pawn in an evil Separatist plot. Meanwhile, Obi-Wan toils in the slave camps of Kadavo, a grim situation that grows increasingly bleak.

414 AFIN

4.14 | January 13, 2012
Written by: Christian Taylor | Directed by: Dave Filoni
A peace conference between Separatists and Republic delegates is interrupted by Lux Bonteri, the son of a late Separatist Senator, who involves Ahsoka in his dangerous search to find justice for his mother's death.

415 D

4.15 | January 20, 2012
Written by: Brent Friedman | Directed by: Kyle Dunlevy
When the Jedi learn of a Separatist plot to kidnap Chancellor Palpatine, one of them must go deep undercover as a hardened criminal to extract information from the conspirators.

416 FAE

4.16 | January 27, 2012
Written by: Brent Friedman | Directed by: Bosco Ng
Fleeing across the galaxy with criminal fugitives, a disguised Obi-Wan, Cad Bane and Moralo Eval are tenaciously pursued by Anakin and Ahsoka, who have no idea they're chasing their friend.

417 TB

4.17 | February 3, 2012
Written by: Brent Friedman | Directed by: Brian Kalin O'Connell
The disguised Obi-Wan accompanies Cad Bane and Moralo Eval to Serenno, where they enlist in a brutal competition with other bounty hunters from around the galaxy to determine who will participate in a plot to kidnap the Chancellor.

418 CON

4.18 | February 10, 2012
Written by: Brent Friedman | Directed by: Danny Keller
The Chancellor travels to Naboo to preside over a public ceremony, guarded by Jedi Knights. Dooku and his bounty hunters -- including an undercover Obi-Wan Kenobi -- launch their kidnapping plot.

419 M

4.19 | February 24, 2012
Written by: Katie Lucas | Directed by: Steward Lee
Count Dooku is determined to have revenge against the Nightsisters of Dathomir after their betrayal. General Grievous launches an all-out droid attack against the magic-wielding witches, and Mother Talzin and Asajj Ventress lead the defense with all the dark powers at their command.

420 B

4.20 | March 2, 2012
Written by: Katie Lucas | Directed by: Kyle Dunlevy
An aimless Asajj Ventress joins a team of bounty hunters under the leadership of young Boba Fett. On an alien world, they undertake a dangerous but profitable mission that tests the limits of their skills, and the strength of Asajj's character.

421 B

4.21 | March 9, 2012
Written by: Katie Lucas | Directed by: Bosco Ng
The dark warrior Savage Opress is on a quest to find his long-lost brother. Could Darth Maul truly be alive, after more than a decade since his gruesome bisection at the blade of Obi-Wan Kenobi? Savage voyages into the depths of a twisted planet to find whatever became of the fallen Sith Lord.

422 R

4.22 | March 16, 2012
Written by: Katie Lucas | Directed by: Brian Kalin O'Connell
Savage and Maul, now reunited, pursue Obi-Wan Kenobi in search of revenge, and the Jedi Knight finds himself forced to unite with a surprising ally to defend against the deadly siblings.