The St Trinian's Marriage Bureau, run by Flash Harry, orchestrates a plan to win a European "Goodwill" trip competition, much to the dismay of the Ministry of Education. To achieve this, the school convinces Joe Mangan, a diamond thief hiding at the school, to join the girls on their trip, with the real headmistress being held captive in the belfry.
Blue Murder at St. Trinian's
A group of feisty schoolgirls from St. Trinian's School join forces with a cunning diamond thief posing as their chaperone, as they navigate a thrilling adventure through Italy, outwitting authorities and overcoming unexpected obstacles along the way.