Green for Danger (film)  Green for Danger is a 1946 British thriller film, based on the 1944 detective novel of the same name by Christianna Brand. It was directed by Sidney Gilliat and stars Alastair Sim, Trevor Howard, Sally Gray and Rosamund John. The film was shot at Pinewood Studios in England. The title is a reference to the colour-coding used on the gas canisters used by anaesthetists. In August 1944, during the V-1 doodlebug offensive on London, patient Joseph Higgins (Marriott) dies on the operating table in a rural British hospital in the southeast of England. The anaesthetist, Barney Barnes (Howard), has had a patient die in similar circumstances previously, and when Sister Bates (Campbell) is killed after revealing that the death of Higgins was not an accident, Inspector Cockrill (Sim) is asked to investigate. Cockrill's investigation is hampered by the conflict between Barnes and Mr Eden (Genn) because of their competition for the affections of Nurse Linley (Gray). After a murder attempt is directed at Linley, the inspector restages the operation in order to unmask the murderer. According to trade papers, the film was a "notable box office attraction" at British cinemas in 1947. The film has also been highly praised by critics. Leslie Halliwell noted that it was a 'classic comedy-thriller, with serious detection balanced by excellent jokes and performances, also by moments of fright'. The Criterion Collection released Green for Danger on laserdisc in 1993 with optional audio commentary by Bruce Eder. Home Vision Cinema released it on VHS at the same time. Criterion released the film on DVD in 2007 with Eder's commentary and a 2007 interview documentary produced by Heather Shaw, "Geoff Brown on "Green for Danger"" (Brown being the author of a book on the work of Gilliat and Launder). The DVD also includes a booklet with an essay on the film by Geoffrey O'Brien and a programme note by Gilliat from a 1960s revival screening.