Solo for Sparrow (1962)

"Solo for Sparrow" is a 1962 Crime movie directed by Gordon Flemyng and starring by Anthony Newlands, Glyn Houston. A group of crooks accidentally kill an elderly shop assistant while stealing the keys to the jewellery shop where she works. When his superiors think that the case is better handed over to Scotland Yard, the local detective inspector, Sparrow, decides to go solo to investigate the crime himself.