Gang Busters was the noisiest show on the air. The sharp blast of a policeman's whistle. Shuffling feet. Gunshots. A broken window. The stark metallic voice of a burglar alarm, and the forlorn answer of a police siren. Machine guns spraying bullets like Flit. Tires screeching, more glass breaking.

And this was only the opening signature.

The best-remembered of all police shows was produced "in cooperation with police and federal law enforcement departments throughout the United States." It was billed as "the only national program that brings you authentic police case histories." It was so loud that it created its own term in slang: to "come on like gangbusters," meaning "to enter, arrive, begin, participate, or perform in a sensational, loud, active, or strong manner"._{John Dunning}