In "Dreamcatchers", Tracy appears, feral, out of her mind, outside a prison transport van after veering it off the road. Inside is her father and his client, Donovan Donati. She attacks the van, wounding the two guards, then comes out facing her father in her shapeshifted state and savages him to death. Scott's Pack learn of Tracy, her night terrors and attempt to track her down, thinking she could be a new werewolf. Parrish learns later in the night Tracy was at the hospital, killing her psychiatrist. Tracy appears in Ken Yukimura's sophomore history class. Scott and his Pack come for her, but she hallucinates them as the Doctors. Tracy collapses, puking up mercury. Scott, Stiles and Malia bring her to Deaton for treatment while Kira and Lydia search her house. Tracy comes to, suddenly manifesting a Kanima's tail and hide, and escapes the clinic, even bypassing a mountain ash barrier. Lydia deduces Tracy is still in a night terror, sleepwalking, and is targeting people who tried to help her, including Natalie Martin. Tracy appears at the Sheriff's station having tracked down Natalie, wall crawling on the roof, paralyzing the deputies, about to savage Natalie. She wounds Lydia, but Kira fights her off, severing her reptilian tail. Malia arrives and takes Tracy on. The werecoyote eventually subdues Tracy. Malia snaps Tracy out of her night terror, telling her she is awake and not dreaming. Tracy, fully aware and conscious, confusedly asks "What's happening to me?". Just then the Dread Doctors appear, and euthanize Tracy, killing her. In "Status Asthmaticus", Theo Raeken injects Tracy's corpse with a restorative liquid, and she is brought back to life (along with Hayden, Corey, and Josh Diaz). Theo declares to the four other Chimeras he is their Alpha and they are his Pack. Tracy and the others obediently follow Theo.
