When Sarah breaks into Agent Ellison‘s apartment looking for the missing T-888 endo-arm, she discovers dossiers, files and videos from her stay in the mental hospital. The files lead her to hospital psychiatrist Dr. Peter Silberman, a doomsday convert who made Sarah‘s hospital stay unbearable. Meanwhile, Cameron enrolls in a ballet class taught by Maria Shipkov, Dmitri‘s sister, in an effort to track down his whereabouts and to find out who has The Turk. John learns what it took his mom to escape the mental hospital.