The Pure Hell of St Trinian's The Pure Hell of St Trinian's The Pure Hell of St Trinian's is a 1960 British comedy film set in the fictional St Trinian's School. Directed by Frank Launder and written by him and Sidney Gilliat, it was the third in a series of four films. The St. Trinian's Girls burn down the school building and are, subsequently, put on trial at the Old Bailey in London, found guilty, and await sentencing the next day by Judge Slender (Raymond Huntley). This leads to rejoicing at the Ministry of Education, and in Barset, the school's village home, where Sergeant Ruby Gates
The Mystery of the Blue Train Mirelle, who was on the train with Derek, tells Poirot she saw Derek leave Ruth's compartment around the time the murder would have taken place. Derek is then arrested. Everyone is convinced the case is solved, but Poirot is not sure. He does more investigating and learns more information, talking to his friends and to Katherine, eventually coming to the truth. He asks Van Aldin and Knighton to come with him on the Blue Train to recreate the murder. He tells them that Ada Mason is really Kitty Kidd, a renowned male impersonator and actress. Katherine saw what she thought