Sotto Voce(1996)

Telma (Norma Pons) is concerned when her father Salerno dies of a heart attack in a movie theater while watching a film of two thugs beating another man. She believes that there is something more to it, and seeks the help of Deganis (Patricio Contreras), a forensic psychiatrist. Deganis, having found out the names of the two actors doing the beating onscreen, looks one of them up. His name is Walensky (Lito Cruz), and he is looking for Smith (Martin Adjemian), the other actor.