Between Midnight and Dawn

Between Midnight and Dawn is a 1950 American film noir directed by Gordon Douglas, starring Mark Stevens, Edmond OBrien and Gale Storm.

One night Rocky and Dan arrest murderous racketeer Ritchie Garris Buka but he escapes and swears vengeance. In a thrillpacked climax, Garris makes a desperate escape using a little kid as a shield. After Garris girlfriend Robbins is killed stepping in front of his gun, Purvis shoots Garris.

Source: Wikipedia