Green Light (1937)

When his colleague Dr. Endicott is late for an operation, Dr. Newell Paige decides to proceed with Mrs. Endicott's scheduled surgery. The surgery had already been postponed from the previous day and Paige is convinced the surgery needs to go forward without delay. Part way through the operation however, Endicott arrives and takes over only to make a serious error. When a hospital inquiry finds him responsible for Mrs. Dexter's death, he is forced to resign. By chance he meets Mrs. Dexter daughter, Phyllis, and while there is a mutual attraction, she rejects him when she learns his true identity. With little else to do, Paige decides to join his one time hospital colleague in Montana, Dr. John Stafford, who is continuing his tests into spotted fever. Paige is impatient however and decides to test a possible cure on himself.