

The all-girl school foil an attempt by train robbers to recover £2.5 million hidden in their school.
Acting
Frankie Howerd playing twins with zero subtlety, absolute commitment
Costume
Those stockings are doing A LOT of narrative heavy lifting
Production
Real steam train chaos shot on location with genuine British railway energy

Director
Sidney Gilliat
Trivia, insights & behind the scenes
This was the fourth St Trinian's film, riding the wave of 1960s British sex comedy that somehow stayed family-friendly through sheer camp.
The real Great Train Robbery happened in 1963; this film cashed in so fast the wounds were still fresh. Frankie Howerd's twin performance required such precise timing that one flub meant starting entire scenes over.
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