Down Three Dark Streets is a 1954 documentarystyle film, starring Broderick Crawford and directed by Arnold Laven. The screenplay was written by Gordon and Mildred Gordon, based on their novel Case File FBI.
One involves wanted fugitive Joe Walpo, who has killed a gasstation attendant. Another concerns a department store fashion buyer, Kate Martell, who is being extorted by a man threatening to kill her daughter.Ripley and his new partner trail Connie Anderson, a girlfriend of Walpos, to his hideout, where Ripley shoots him. Then they follow Kate to the Hollywood sign in the hills above Los Angeles, where she has been told to bring the money. There the extortionist is revealed to be a man named Milson who had shown a romantic interest in Kate, leading to a confrontation with Ripley. ........
Source: Wikipedia