First duel in Kesla Vein In 44 ABY , a duel occurred near the pumping station of the city of Kesla Vein on the planet Nam Chorios , when three Sith Saber s of the Lost Tribe of Sith commanded by Saber Tola Annax attacked exiled Jedi Grand Master Luke Skywalker , his son Ben , and outcast Sith apprentice Vestara Khai . The Sith were dispatched to capture Khai and kill the Skywalkers ; additionally , both sides were searching for the dark side entity Abeloth . These aims led to a duel between the two factions . While Annnax watched , her three companions engaged the Jedi and Khai in three separate duels and were quickly killed . Annax escaped and the Jedi group soon came under another attack from their enemies . Prelude . In 43 . 5 ABY , the exiled Jedi Grand Master Luke Skywalker and his son — the Jedi Knight Ben Skywalker — discovered that a dark side entity called Abeloth was causing a Force psychosis that had befallen several Jedi Knights of the New Jedi Order . The Lost Tribe of Sith — a group of Sith from the planet Kesh — also encountered Abeloth in the Maw , and High Lord Sarasu Taalon convinced the Skywalkers to ally themselves with the Sith to defeat Abeloth . However , their attempt to kill the entity was unsuccessful and the alliance was broken . The Skywalkers and the outcast Sith apprentice Vestara Khai — who was forced to help the Jedi after killing Taalon when the High Lord began to transform into another Abeloth - like being — hunted Abeloth and located her on the planet Nam Chorios in 44 ABY . Luke Skywalker had established a blood trail on Abeloth and was therefore able to find the entity on the world . The Sith also tried to find Abeloth , and Khai sent a secret message to her father , Gavar Khai , revealing that Abeloth and the Jedi group were on Nam Chorios . The elder Khai dispatched several Sith Saber s to the planet in order to find and capture his daughter as well as kill the Skywalkers . The duel . Led by the Keshiri Sith Saber Tola Annax , a group consisting of Annax and three additional Sabers found the Skywalkers and Vestara Khai near the pumping station of the town Kesla Vein . When the Jedi group returned to their airspeeder , Annax jumped on their vehicle and demanded that Vestara surrender . She neglected to do so , and Annax reacted by sending the rest of her team to attack the Jedi and the Sith girl . While the Keshiri Saber stayed behind , the other three engaged all three enemies in one - against - one duels . Vestara fought against a petty officer of her father ' s ; he tried to use the Force to throw stones at her , but she was able to strike her enemy down by stabbing her blade through his heart . Meanwhile , Luke Skywalker cut his enemy in two and rushed to help his son . However , the younger Skywalker beheaded his opponent shortly afterward . Annax escaped after the defeat of her team , using a cable to climb a ravine before driving away in another airspeeder . Additionally , the Keshiri destroyed the Jedi ' s speeder , leaving them without a vehicle . Aftermath . The Sith petty officer used the Force during the duel , an action that caused a Force storm somewhere on the planet , as the tsil crystals on Nam Chorios greatly boosted and redirected Force energy . A short time after the duel , Luke Skywalker received a message from the journalist Kandra Nilitz , who was able to convince the Grand Master to meet with her . Shortly before arriving at Nilitz ' s landspeeder , the Jedi group once again had to fight off several Sith , but they escaped and continued the search for Abeloth in the city of Crystal Valley . The Sith , meanwhile , also continued their search for Abeloth and the Jedi , leading to another confrontation between the three parties . Behind the scenes . The skirmish first appeared in " " , the seventh novel of the " " series . " Conviction " was written by Aaron Allston and published in 2011 .