Police Squad!

Sally, a bank teller deeply in debt, robs her own bank and plants evidence that implicates a fairly commonplace man who was present during the crime. Police Squad, a special unit of the police force, is called to investigate a double shooting that happened during the robbery. However, the stories just don't add up. The evidence builds and points in Sally's direction, but it's up to Frank to find the clues that will put her away.

The mob sets up an "insurance" scam that threatens several businesses and residents. Frank and Nordberg go to investigate. After a dance instructor is beaten up, they set up their own shop - a key-making and locksmith store - and go undercover. When the mob stops by to offer them "insurance", Frank dismisses their threats and the mob strikes their store. Frank ends up having the key to stopping the crime wave, largely because of the key-making and locksmith shop he and Nordberg set up.

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.