The Hidden Enemy

"Truth enlightens the mind, but won't always bring happiness to your heart."

- Moral

"The Hidden Enemy" is the sixteenth episode of Season One of the Star Wars: The Clone Wars television series. It serves as a prequel to The Clone Wars movie.

Official description
Anakin and Obi-Wan discover evidence of a traitor amongst their ranks while attempting to lead Republic forces to liberate the planet of Christophsis from a Separatist siege.

Plot summary
Anakin, Obi-Wan and their clones prepare to ambush the advancing droid forces from two towers. Just as they are about to fire on the droids, the advances split into three and droids suddenly appear in Obi-Wan's building. Anakin calls in a gunship for immediate evacuation before leading his squad to assist Obi-Wan. They escape to the roof, and the droids follow them. Their gunship arrives, picking them up, but not before taking the command tactical droid's head to find out how the Separatists discovered their plan. At the base, Rex and Cody analyze the droid's memory, but the best they can find is that the Separatists discovered their position ahead of time. Obi-Wan suggests that they may have a spy in their ranks. The Jedi decide to go behind enemy lines to investigate, while Rex and Cody sweep out the base. As the Jedi leave, Cody notices that someone left his comlink on, meaning the spy was eavesdropping on them. They spot someone running off and chase him. Unfortunately, they lose him in the mess hall, among their many brothers, meaning that one of the clones is a traitor. They decide to contact the Jedi. Unfortunately, the droids are keeping the communications jammed.

As Anakin and Obi-Wan race to the Separatist base on BARC speeders, they notice an increasing number of droids spying on them, but still decide to continue the mission, despite the fact that it has been compromised. They arrive at the enemy base and inside, they meet Asajj Ventress again and begin to duel with her.

Rex and Cody have Artoo analyze the communication history, to find out if anyone had sent out any unauthorized transmissions. Rex notices an irregular wavelength that is too low for them to normally detect, which would disappear in the few days. The transmission seems to be coming from Slick's barracks, so they decide to investigate. They question all of Slick's men: Jester was cleaning his weapon, Punch and Sketch were in the mess hall, and Gus was in the infirmary. The last one, Chopper, appears that he is hiding something, and reluctantly reveals that he was collecting droid fingers, forbidden against protocol. But after Slick says that his character is in question because of this, Chopper denies being a spy, and Slick offers a full investigation when the Jedi come back. However, Chopper snaps that he saw Slick turn into the command center rather than the mess hall. Cody also notes that Slick somehow knows about the Jedi's departure, while only Rex and Cody were known to know about it, and everyone crowds around the sergeant. Slick, knowing he's been discovered, punches Cody and Chopper and escapes. Cody and Rex try tracking him, only to find a charge on the hangar deck. Slick blows up many of the gunships and AT-TEs with earlier-placed charges, and he also blows up the weapons depot.

The Jedi managed to overcome Ventress and demand her surrender, but as they edge closer to capture her, she creates a large hole in the floor beneath their feet, pushing them one level down. Ventress taunts them and runs away, and the Jedi follow her, discovering that she has set up a whole army to invade Christophsis.

The other clones inform Cody and Rex that Slick went into the command center, and they order the others to secure the perimeter while they go inside.

The Jedi engage Ventress again, overbalancing the tri-droid she is standing on before escaping on STAPs. Ventress dispatches Loathsom to take care of the Jedi while she moves on to the next phase of her master's plan, and she heads to the Trident.

Rex and Cody enter the command center in search of Slick. They look up at the vents (where Slick is hiding) and inconspicuously act out a scene. Cody leaves his blaster on the table while Rex goes to "secure the lockdown". Slick comes down from the vents and grabs Cody's blaster, only to find that it is empty, and Rex comes up from behind him and points his blaster at Slick's head. Slick states he's not a traitor, but they are, knocking Cody and Rex's blaster out of his hand. He tries to leave, only to be tackled by Cody. He engages the two commanders in physical combat, stating that he was tired of all the suffering and was offered freedom and money from Ventress. Cody manages to knock him out and they apprehend him. As they present Slick before the Jedi, the latter ask why he would betray his brother; Slick snaps that his brothers are enslaved by the Jedi and that he was striking a blow for all of them. Rex retorts that he put all of them at risk. Slick defends that he loves his brothers, but they are too blind to see it; Cody tells him that if he truly loved his brothers, then he wouldn't have put them at risk. Cody orders the other clones to take the traitor to lockup.

Obi-Wan asks if they managed to salvage anything from the weapons depot. Rex says that though most of their weapons are trashed, they managed to save the heavy cannons, which will prove to be useful in the coming battle.

Cast

 * Matt Lanter - Anakin Skywalker
 * James Arnold Taylor - Obi-Wan Kenobi
 * Nika Futterman - Asajj Ventress
 * Tom Kane - Narrator
 * Dee Bradley Baker - Clone troopers
 * Matthew Wood - Battle droids

Characters

 * CC-7567 (Rex)
 * CC-2224 (Cody)
 * Dooku
 * Chopper
 * Gus
 * Hawk
 * Jester
 * Obi-Wan Kenobi
 * Plo Koon
 * Whorm Loathsom
 * Punch
 * R2-D2
 * Sketch
 * Anakin Skywalker
 * Slick
 * Asajj Ventress
 * Mace Windu
 * Yoda

Droid models

 * B1 battle droid
 * B2 super battle droid
 * Octuptarra combat tri-droid
 * R2-series astromech droid
 * Tactical droid

Events

 * Clone Wars
 * Battle of Christophsis

Locations

 * Christophsis
 * Crystal City
 * Coruscant
 * Jedi Temple

Organizations and titles

 * Confederacy of Independent Systems
 * General
 * Dark Acolyte
 * Galactic Republic
 * Grand Army of the Republic
 * 212th Attack Battalion
 * 501st Legion
 * Clone trooper
 * Clone trooper pilot
 * Captain
 * Commander
 * General
 * Jedi Order
 * Jedi High Council
 * Jedi Master
 * Jedi Knight

Sentient species

 * Christophsian
 * Human
 * Clone
 * Kel Dor
 * Kerkoiden
 * Rattataki
 * Twi'lek
 * Yoda's species

Vehicles and vessels

 * All Terrain Recon Transport
 * All Terrain Tactical Enforcer
 * Amored Assault Tank
 * BARC speeder
 * C-9979 Landing Craft
 * Low Altitude Assault Transport/infantry
 * STAP
 * Trident

Weapons and technology

 * Comlink
 * DC-15A blaster rifle
 * DC-15S blaster
 * DC-17 hand blaster
 * Blaster cannon
 * Electrobinoculars
 * Lightsaber
 * Phase I clone trooper armor
 * Kama
 * Pauldron
 * Republic Artillery Gun
 * Thermal detonator

Behind The Scenes
In this episode, when Obi-Wan is explaining the Jedi's mission behind enemy lines to Cody and Rex, he calls Cody "Captain" when Cody is clearly a Commander. The mistake arose during the editing process, since originally Obi-Wan was talking to Rex.

The script originally dictated the start of the episode to involve the clones setting up a combat droid nicknamed "The Beast", similar in design to the dome-shaped mining droids seen in A New Hope. However, to keep the war defined as clones vs. droids and not clones using droids vs. droids, and since the sequence didn't even explain the droid's use, the sequence was cut. This episode is also a notable example to contridictions in Star Wars Cannon universe. Clone troopers are meant to be the most trusted "persons" in the galaxy, they should not be able to betray their commanders nor should they be able to take money for that, they are geneticly manufactred for that.