See No Evil, Hear No Evil (1989)

Wally is a blind man looking for a job. Dave is a deaf man who runs a newsstand. When Dave hires Wally, he never imagines they'll have to work together to survive. After a murder occurs at their newsstand, they figure out who the killer is, one only by hearing and the other just by listening. The investigating detective pegs them as the main suspects and they must cooperate to prove their innocence in a hilarious adventure.