Dragnet (1951)

An ex-con bears a grudge against the city of Los Angeles. He wants to blow up city hall unless his demands are met. He has a powerful bomb. The police find 28 sticks of dynamite in his apartment. Only Sergeant Friday has the power to stop this 1950s terrorist attack.

Friday and Jacobs track down a drug ring through a small-time television actor who is hooked on heroin.

A new-born baby is stolen from a hospital nursery and the trail leads the police to a deranged mother.

The police interrogate a suspect (Lee Marvin) they believe to have murdered more than a dozen men.

Someone murdered a secretary late at night in her office. She was beaten to death with a metal pipe wrapped in newspaper. Could it be the drunk found three blocks away beating his head against a wall?

Friday confronts a jeweler with tape recorded evidence that proves he hired someone to rob his own store.