After the crew robs the Shadow Depository and Zhaan confronts a lethal illness, he becomes genuinely disturbed and wrought with grief over her death. He joins up with the crew of Talyn but frequently is at odds with his desire to "save" others, which eventually alienates Aeryn and Crais. Feeling that Zhaan is calling out to him, he eventually parts ways with the crew to search for her spirit. He is later found a prisoner on Katratzi which had been part of the reason Scorpius held him prisoner: he was searching for it and Stark knew where it was from "crossing over" Scarrens. He is rescued by Chiana and Noranti and rejoins Moya's crew. During "The Peacekeeper Wars", he is forced to "cross over" the Eidolon leader and thus gains his knowledge of the Eidolon powers, something that makes Stark almost crazy. He later transfers the knowledge and regains his usual personality. At the end of the series, Stark finds a measure of peace and leaves his mask with Crichton, revealing that the energy beneath it is now gone.