See No Evil, Hear No Evil (1989)

Dave is deaf, and Wally is blind. They witness a murder, but it was Dave who was looking at her, and Wally who was listening.
Arthur Hiller
Richard Pryor, Gene Wilder, Joan Severance, Kevin Spacey
12 May 1989 (USA)tt0098282 , Deafness, Blindness And Impaired Vision, Suspicion Of Murder, Witness, Friendship, Murder, Blindness