Equus (1977)

Sidney Lumet directed this film version of Peter Shaffer's dramatic play, transforming theatrical symbolism into cinematic realism. Richard Burton received an Academy Award nomination for Best Actor for his performance as Martin Dysert, a psychiatrist determined to unravel the disturbed mind of Alan Strang (Peter Firth), a young stableboy. In a fit of rage, Strang has blinded a stable of six horses. The court then assigns Dysert to probe the young man's mind in order to understand why he committed such a violent act. But the doctor, who is battling demons of his own, wonders if he can save the boy--and whether saving him at all is the right thing to do. Joan Plowright stands out as Dora Strang, the young boy's mother.