Blue Murder at St Trinian's as it is in that of the belles. None of the latter is notable as an actress; all are lissome and lively girls. They make for pleasant company on a mad excursion. It's only too bad that Mr. Sim had to languish in jail." while more recently, David McGillivray noted in "Time Out", "Inventive situations utilising a classic British blend of comedy and crime make it the best (if you like this sort of thing) in the series which followed The Belles of St Trinian's." Blue Murder at St Trinian's Blue Murder at St Trinian's (1957) is British comedy film
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