The Green Cockatoo (also known as Four Dark Hours and Race Gang) is a 1937 British drama film directed by William Cameron Menzies and starring John Mills, Rène Ray, and Robert Newton. It was adapted by Ted Barkman from a story by Graham Greene and shot at Denham Studios. It tells the story of an innocent young woman who arrives in London looking for work and, pursued by both criminals and police, is involved in a headlong series of fights and flights.