Rescue of Quinlan Vos During the Clone Wars , the Jedi Order mounted a mission to rescue Jedi Master Quinlan Vos , who had been captured while on an assignment to assassin ate Count Dooku . Prelude . After Asajj Ventress ' s failed attempt to rescue and sway Quinlan Vos from the dark side on Serenno , she escaped and met with Jedi Master Obi - Wan Kenobi in a bar on Coruscant . A month later , Ventress ran into the Mahran Jedi Knight Akar - Deshu . While his approach was met with hostility and reluctance to speak , he explained to him that Kenobi informed the Jedi High Council of what happened to Vos . Afterwards , he accompanied and presented her to the Jedi Council . As Ventress entered the Jedi Council Chamber , Mace Windu greeted her with an arrest warrant , but Masters Kenobi and Yoda gave her the chance to provide information of Quinlan Vos . As she explained , initially , the Council members - particularly Mace Windu - interrogated her with tones of suspicion and hostility . Ventress answered truthfully - that she trained Quinlan Vos in the ways of the dark side , believing it was the best method to gather their strength to assassinate Dooku , which shocked the Council members . But Ventress made a point of reminding the Jedi Council that they were the ones who wanted to pair up Quinlan Vos and her to assassin ate Dooku . As she , Desh , and Anakin Skywalker left the Council Chambers , the Council debated on this new information . Kenobi believed that there was still a chance at saving Vos from the dark side , though this was met with mixed responses from the Council members . All of a sudden , Admiral Wullf Yularen contacted the Jedi Council regarding intel of Count Dooku and his new " Admiral Enigma " : that Dooku ' s " Providence " - class dreadnought was sighted above and ready to attack the planet of Taris . Yoda then presented Ventress with a deal - if she helps Kenobi and Skywalker bring back Vos to the Jedi Temple and to the light side , then she would be given a full pardon of her war crimes . The rescue . Skywalker , Kenobi and Ventress boarded the " Banshee " , and she flew it into the hangar of Dooku ' s capital ship that was leading the fleet . The bounty hunter used Separatist codes to disable the hangar shields and enter the hangar . As they safely landed , they deduced that this " Admiral Enigma " — Vos — was on the bridge of the destroyer . Skirmish on the bridge . Ventress guided the two Jedi through the halls of the destroyer , avoiding battle droid patrols . Once they reached the bridge , the figure that rose from the captain ' s chair wasn ' t Vos - it was Dooku . With his red blade ignited , Anakin wasted no time in leaping to Dooku with his own blue lightsaber . While Skywalker and Tyranus dueled , the several battle droid s on the bridge opened fire on Ventress and Kenobi . As Ventress accessed the computer on the lowest level of the bridge , Kenobi covered her by deflecting the incoming blaster fire with his own lightsaber . Ventress also used the Force to throw two battle droids together ; this distracted Dooku . He fled down to the second level with Skywalker in close pursuit . The duel between Anakin and Dooku seemed to be a stalemate . The Sith Lord released a blast of blue Force lightning at his opponent . Skywalker raised his blade to shield himself from the lightning . With his other hand , Dooku used the Force to throw parts of a destroyed battle droid at Anakin . He dodged by jumping to the third level below , with Dooku in pursuit . More droids entered the bridge , opening fire on Ventress and Obi - Wan . While they were redirecting the blaster fire , Kenobi accessed the ship ' s computer and found out that Quinlan Vos was being im prison ed in the ship ' s brig below and that " Admiral Enigma " never existed . He concluded that Dooku had been using Vos as a tool to lower Jedi morale . As Ventress and Kenobi fled the bridge to the brig , Anakin still continued fighting Tyranus . Rescuing Quinlan Vos . Upon entering Vos ' cell in the brig , Ventress and Kenobi discovered an emaciated and battered Vos hanging suspended from the ceiling with glowing shackles . In order to perpetuate the deception that Vos was a prisoner , Dooku had whipped him . Vos appeared glad to see both his former lover Ventress and his fellow Jedi Master Kenobi . As the two freed Vos from his restraints , Ventress saw his eye s flash and realized that he had embraced the dark side of the Force . However , Kenobi disbelieved Ventress and Vos claimed that he was still loyal to the light side and Ventress . Asajj attempted to strike down Vos with her lightsaber , but was retrained by Kenobi . Before a fight could break out , battle droids arrived in the brig and the trio were forced to flee . Shortly later , they were rejoined by Skywalker who used his lightsaber to slice a circular hole through the ceiling ; crushing the battle droids below in the process . After making their way back to the hangar , the four boarded Ventress ' ship " Banshee " and fled into space . While Kenobi and Skywalker were relieved to have rescued Vos , Ventress insisted that Vos could not be trusted . After escaping Vulture droids , the four escaped on the " Banshee " into hyperspace . Aftermath . Despite rescuing Quinlan Vos , the Jedi mission actually played into the hands of the Separatists . In Dooku ' s captivity , Vos had already embraced the dark side and become the Sith Lord ' s apprentice . In secret , Vos planned to use his apprenticeship to Dooku to force the Sith Lord to lead him to Darth Sidious and thus allow him to destroy the Sith . Using his position within the Jedi Order , Vos leaked classified information about at least two Republic military operations to the Separatists . After Yoda discovered that Vos had indeed embraced the dark side , the Jedi Council concocted a mission for Vos to kill Dooku . If he failed the test , they would arrest him for treason . Meanwhile , Vos managed to reconcile with Ventress and reaffirmed his vow to marry her once he had killed Dooku . As expected , Vos failed to carry out the mission and he along with Dooku were promptly arrested by Kenobi and Skywalker . However , Vos managed to break out of his restraints and free Dooku . During the escape attempt , he killed two of his Jedi colleagues , Akar - Deshu and Kav Bayons . Together with Ventress , Vos and Dooku escaped aboard the " Banshee " and crash - landed on Christophsis . After trudging their way to the Separatist base there , Dooku contacted Darth Sidious for help in getting offworld . Vos only caught a fleeting glimpse of the mysterious Sith Lord . Shortly later , the Jedi and Republic attacked the Separatist base . During the battle , Ventress was killed when she took the brunt of Dooku ' s Force lightning in order to protect her lover Vos . Dooku then tried to goad Vos into killing him , but the Jedi Master refused to take the bait and returned to the light side . While the Jedi secured the base and took Vos into custody , Dooku managed to escape with the help of Sidious . Since the mission to kill Dooku had brought Vos dangerously close to the dark side , the Jedi abandoned any future attempts to assassinate Dooku .