In the Region of Ice (1976)

In this American Film Institute-subsidized short subject, Fionnula Flanagan plays a sharp-tongued but compassionate nun, while Peter Lempert is cast as a sullen, emotionally disturbed boy. The title refers to the "thawing" process that occurs when the nun attempts to break through Lempert's wall of silence. Winner of the Oscar for "Best Short Film, Live Action".

Unfortunately the movie In the Region of Ice is not yet available on HBO Max.