Green for Danger (1946)

During a German bombing raid on rural southeast England during World War II, a hospital undergoes heavy shelling. Postman Joseph Higgins (Moore Marriott) dies on the operating table when a bomb explodes in the operating room. But when Sister Marion Bates (Judy Campbell) dies after revealing that this is not the first patient of anesthetist Barney Barnes (Trevor Howard) to die under suspicious circumstances, Police Inspector Cockrill (Alastair Sim) is brought in to investigate.