Terminator: The Sarah Connor Chronicles: The Demon Hand

When Sarah breaks into Agent Ellison's apartment looking for a missing endo-arm, she discovers dossiers, files and video from her stay in the mental hospital. The files lead her to hospital psychiatrist Dr. Silverman, 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.