Second battle of Christophsis

"Masters, I submit to you that Vos's fall was of our making. And Asajj Ventress's death is on all our hands. That Vos is here with us today, devastated but on the light path once more, is no credit to us, but to her. She died a true friend of the Jedi, and I believe that she deserves to be laid to rest with respect and care, with all gratitude for the life she gave and the life she has restored to us, and this bitter lesson that came at so dear a price."

- Obi-Wan Kenobi, speaking to the Jedi Council

At least two years after the Battle of Christophsis, a second battle took place on the planet Christophsis during the Clone Wars. After deducing that the Jedi Master Quinlan Vos had fallen to the dark side of the Force, the Jedi Council sent him on a mission to kill the Separatist leader Count Dooku in order to test his loyalty. From Vos' lover Asajj Ventress, the Jedi learned that Dooku's dreadnought would be visiting Christophsis. Together, Vos and Ventress traveled to Dooku's flagship where Vos managed to engage in a lightsaber duel. Unknown to Vos, the Jedi Obi-Wan Kenobi and Anakin Skywalker tailed along.

When Quinlan failed to kill Dooku and instead demanded that the Sith Lord lead him to his master Darth Sidious, the Jedi were presented with irrefutable evidence of Vos' collusion with the Separatists. Kenobi and Skywalker arrested Vos and Dooku but the duo managed to escape following a confrontation aboard the Venator-class Star Destroyer Vigilance. Together with Ventress, Vos and Dooku attempted to flee aboard Dooku's dreadnought but were shot down.

After crash-landing their starship, the Banshee, on Christophsis, the trio trudged to a local Separatist base there were Dooku contacted Darth Sidious to secure passage offworld. Kenobi and Skywalker subsequently launched an attack on the fortress. Ventress was killed during a duel between Vos and Dooku. Following a climatic confrontation, Vos managed to reject the dark side by refusing to kill Dooku. Vos was taken into Republic custody and subsequently pardoned. Meanwhile, Dooku escaped offworld with the help of Darth Sidious.

Prelude
Following Count Dooku's massacre of civilians on Mahranee, the Jedi Council sent Master Quinlan Vos on a mission to assassinate the Separatist leader. For this mission, Vos partnered up with the Nightsister Asajj Ventress, who instructed him in the ways of the dark side of the Force. Ventress was Dooku's former Sith apprentice and wanted revenge against the Sith Lord for abandoning her. After a brief stint working together as bounty hunters, the two Force-users attempted to assassinate Dooku on Raxus. However, Vos was captured and Ventress was forced to flee into hiding.

In Dooku's captivity on Serenno, Vos was tortured and brutalized by the Sith Lord. After holding out, Vos embraced the dark side after learning that Ventress had murdered his former Master Tholme. Burning with hatred, Vos spurned Ventress' attempts to rescue him during a dangerous mission to Serenno. For the next several months, Vos took his place as Dooku's new Sith apprentice and assumed the persona of "Admiral Enigma". As "Admiral Enigma", Vos inflicted several defeats on the Republic. After realizing that the Jedi would eventually discover his identity, Vos arranged to be rescued by the Jedi and Ventress. While his Jedi colleagues were convinced that Vos was still loyal to the light side, Ventress sensed that he had embraced the dark side.

Back in the Jedi Order, Quinlan Vos used his position to play a double game with both the Republic and the Confederacy. He leaked intelligence about two military operations to Count Dooku. In secret, Vos wanted to curry favor with Dooku in order to force the Sith Lord to reveal his master, the elusive Darth Sidious. However, these two suspicious incidents led the Jedi Order to rightfully suspect that they had a traitor within their ranks. After Master Yoda deduced that Vos had indeed embraced the dark side, the Jedi Council sent him on a mission to assassinate Count Dooku.

Viewing the mission as a second chance to destroy Dooku and Sidious at the same time, Vos accepted the mission and informed his lover Asajj. While Ventress was initially upset about Vos taking on another mission, she relented in return for being allowed to accompany Vos on his mission. Agreeing to help Vos complete the mission, Ventress revealed to the Jedi Council that Dooku would be visiting the planet Christophsis in his Providence-class dreadnought. Earlier, the Jedi Council had pardoned Ventress of her crimes in return for helping to rescue Vos. While some members of the Jedi Council still distrusted Ventress, Vos vouched for her and the two Force-users were able to proceed with their mission.

A test of loyalty
Quinlan Vos and Asajj Ventress traveled to Christophsis on Ventress' starship Banshee. Upon reaching Dooku's dreadnought, Ventress opened the ship's doors so that Vos could leap into the dreadnought's hangar. Meanwhile, Anakin and Obi-Wan used a captured Separatist shuttle and two reprogrammed battle droids to infiltrate Dooku's flagship with the intention of keeping an eye on Quinlan. While their reprogrammed battle droids distracted the droids in the hangar bay, the two Jedi took the opportunity to head to the observation room, where Dooku was reported to be heading. As expected, Dooku headed there where he was greeted by Vos, who had been captured by several battle droids.

While hiding behind a desk, Kenobi and Skywalker watched as Vos parried with Dooku in a lightsaber duel. Despite gaining the upper hand, Vos failed to deliver the final blow and instead grabbed the Sith Lord by his hair and slammed his head against the floor. Vos then demanded that Dooku reveal the identity of the elusive Darth Sidious. When Dooku refused to cooperate and instead suggested that Vos join forces with him to defeat Dooku, Vos refused to become his apprentice and instead Force-choked Dooku. In the end, Dooku agreed to lead Vos to Darth Sidious; confirming the Jedi Council's fears that Vos was in collusion with Dooku.

Having sufficient evidence to prosecute Quinlan, Kenobi and Anakin sprang up from their hiding place and promptly disarmed Dooku and Vos. Despite Vos' protestations, Kenobi responded that he had already been give more than one chance. After escaping aboard their stolen Separatist shuttle, the two Jedi returned to the Venator-class Star Destroyer Vigilance. On the way, they informed Clone Commander Cody and the Jedi Knights Akar-Deshu ("Desh") and Kav Bayons about Vos' treason and Dooku's capture. The Jedi and clones made preparations to detain the two Force-users and to execute their prisoners if the Jedi Council gave such orders.

Escape from the Vigilance
Upon landing in the Vigilance hangar bay, Quinlan Vos and Dooku were surrounded by twenty-four armed Clone troopers, who had been handpicked by Commander Cody for this sensitive task. They were escorted by Desh and Bayons; the former of whom was deeply hurt by Vos' betrayal since they had previously been friends. While Kenobi and Skywalker went to confer with the Jedi Council about the recent developments, they assigned Desh, Bayons, and the clones to secure the prisoners. As their clone and Jedi escorts were leading them to the ship's brig, Vos tricked Desh into approaching him. After verbally attacking the Jedi, Vos levitated Desh's lightsaber and used it to free Dooku from his bonds. The count emulated his ally and then grabbed Bayons's lightsaber.

After Dooku killed a Clone trooper with his lightsaber and hurled Cody against the corridor and bulkhead, he freed Vos from his restraints and then struck Bayons and four more Clone troopers with Force lightning. Following a brief lightsaber duel, Quinlan managed to overpower his former friend Desh and Bayons by using Desh' poisonous stinger to kill Bayons. To save his former friend the horror of dying an agonizing death, Vos killed him with his lightsaber. Meanwhile, Dooku managed to kill the remaining Clone troopers with the exception of Commander Cody, who sustained a broken leg during the skirmish.

Having overpowered their captors, Vos contacted Ventress and told her to park the Banshee beside the Vigilance frontal hangar doors. Ventress reluctantly helped to evacuate Vos and Dooku. Following a tense reunion between Ventress and Dooku, the trio agreed to head to the Separatist dreadnought above Christophsis. However, the Vigilance under Skywalker's orders opened fire on the Banshee, damaging the ship and causing it to crash onto Christophsis below. The three travelers managed to survive their rough landing and trudged their way across the planet's crystalline surface to a Separatist base. Dooku sustained a broken arm and lost a considerable amount of blood as a result of the crash.

Shortly later, Kenobi and Anakin landed their Jedi shuttle at the crash site. After they and their Clone escorts Threepwood, Tracker, and Boil inspected the wreckage, they were able to deduced that the fugitives had survive and that one of them was wounded. Kenobi then secretly contacted Ventress via hologram and informed her that Vos had turned to the dark side and partnered with Count Dooku. He told her to convince Vos to surrender or they would be forced to execute him. Ventress informed Vos who told her that they were close to the end of completing his secret mission to destroy the Sith. Meanwhile, Kenobi and Skywalker received orders from Windu to execute all the fugitives.

Assaulting the Separatist base
Vos, Ventress, and Dooku eventually arrived at the Separatist base, a large crystal that had been hollowed up into a tower and base. Upon arriving, they were greeted by hundreds of battle droids who led the three fugitives into the base. Upon reaching the command center, Dooku was informed that Darth Sidious had been trying to contact him. Dooku ordered them to leave the room while he conferred with his Sith master but Vos and Ventress insisted on staying. The duo witnessed a hologram of the enigmatic Sith Lord, who wore dark robes to hide his identity.

When Darth Sidious inquired about Vos, Dooku claimed that he was his assassin. With Dooku's presence on Christophsis exposed to the Republic, the Sith apprentice pleaded for his master to send a ship. Sidious replied perhaps before disappearing. Before Vos could argue with Dooku about calling him an "assassin", Republic forces under Kenobi and Skywalker began bombarding the crystal tower; forcing Vos, Ventress, and Dooku to flee to safety. The two Jedi Generals had deployed their shuttle and several ARC-170 starfighters to bombard the Separatist base. Skywalker was about to order that walkers be deployed when Kenobi managed to convince him to order a halt to the bombardment so that they could enter the Separatist base and find the fugitives.

Appearances

 * Dark Disciple