The Enforcer (Blu-ray) Signal One

Classic film noir starring Humphrey Bogart. Crusading District Attorney Martin Ferguson (Bogart) is determined to take down organised crime boss Albert Mendoza (Everett Sloane) but all of his witnesses are being murdered before they can testify in court. When he identifies a crucial new witness, it’s a race against time to find her first, before Mendoza’s henchmen.