[5] Sigourney Weaver plays an agoraphobic expert on serial killers summoned to help a San Francisco detective played by Holly Hunter when a murderer starts imitating serial killers of the past. The two phenomenal stars of Copycat are its greatest attributes. Weaver’s part is a terrified paranoid — a little one-note, but certainly within her wheelhouse. Hunter gives the more remarkable performance, giving nuance and …