Police Squad!

The Butler Did It (A Bird in the Hand) 1 Season 3 Episode

The daughter of a wealthy business man is kidnapped on her 18th birthday and Police Squad swings into action. The main suspect of their investigation is the girl's boyfriend. When Frank and Ed listen to a recording of the kidnapper's demands, they hear the distinct sound of a tuba in the background, though it could also be a ship's horn. They search for a tuba store. When they do track down and find the kidnapper, the criminal fights back.