In this murder mystery, a woman's brother is killed in a freak accident, or so she believes. Fortunately for her, an American journalist is more suspicious and so begins roaming the London streets in search of the killer.

The fourth form monsters' latest trick is their best yet – they have burned down the school! As the girls stand trial, police breathe a sigh of relief, but miraculously the judge's infatuation with a student means the school is freed. For the authorities, it means a new reign of terror as the girls of St Trinian’s regroup with gleeful anticipation.

Chubby Harry Korris plays thespian stalwart Mr. Lovejoy putting on a show with the help of a pretty disparate and desperate lot, that in the words from Hellzapoppin turns out to be a bust. They decide to put a musical comedy on instead.

A group of men from a London pub are going on a darts team outing to Boulogne. Various members of the party have different reasons for going and get involved in various adventures.

The all-girl school foil an attempt by train robbers to recover £2.5 million hidden in their school.

With their headmistress under lock and key in her majesty's prison, the St Trinian's girls find themselves under the protection of the army. However, when the sixth form take a fancy to winning a trip to Italy through means fair or foul, the army discover this is one battle they can't win. Let loose in Europe, it is not long before St Trinian's have succeeded in endangering European relations.

Interested in becoming a serious actor, Mr. Pastry (Richard Hearne) seeks out the services of a down-and-out Professor (Buster Keaton) to help him become the dramatic thespian he hopes to be.

When ambitious wedding planner Meg Mooreland is assigned the task of being in charge of her best friend Ellie's upcoming wedding, she has no idea a series of misevents will end up giving Ellie cold feet at the last minute. Together with her college nemesis and best man Tyler, they must team up to help save the wedding, and perhaps find some romance along the way.

Long after being deserted by her husband, Linda Harrison will soon be free to marry her lover, Michael Carteret. But when her husband suddenly reappears, he attempts to blackmail the couple with a threat of ruining Michael's career. When her husband is murdered, Michael appears to be the only obvious suspect - but will the circumstantial evidence be enough to sentence him to death?