The best Matthew Boulton’s mystery movies

Richard Hanney has a rude awakening when a glamorous female spy falls into his bed -- with a knife in her back. Having a bit of trouble explaining it all to Scotland Yard, he heads for the hills of Scotland to try to clear his name by locating the spy ring known as "The 39 Steps."

Sherlock Holmes investigates when young women around London turn up murdered, each with a finger severed. Scotland Yard suspects a madman, but Holmes believes the killings to be part of a diabolical plot.

The owner of a coal mining operation, falsely imprisoned for fratricide, takes a drug to make him invisible, despite its side effect: gradual madness.

A young painter stumbles upon an assortment of odd characters at an English estate where he has been hired to give art lessons to beautiful Laura Fairlie. Among them are Anne Catherick, a strange young woman dressed in white whom he meets in the forest and who bears a striking resemblance to Laura; cunning Count Fosco, who hopes to obtain an inheritance for nobleman Sir Percival Glyde, whom he plans to have Laura marry; Mr. Fairlie, a hypochondriac who can't stand to have anyone make the slightest noise; and eccentric Countess Fosco who has her own dark secret. The artist also finds himself drawn to Marion Halcomb, a distant relation to Laura for whom the Count also has plans.

Wealthy widow Mrs. Bramson notices that her maid is distracted, and when she learns the girl's fiancé, Danny, is the reason, she summons him in. Mrs. Bramson's niece Olivia takes a liking to Danny, and comes to believe that he may have been involved in the disappearance of a local woman.

Captain Drummond is travelling to Switzerland to marry his girlfriend. However, when a cargo containing dangerous explosives goes missing from its place, Drummond is forced to delay his plans.

A werewolf prowls around at night but only kills certain members of one family. It seems like just a coincidence, but the investigating Inspector soon finds out that this tradition has gone on for generations and tries to find a link between the werewolf and the family, leading to a frightening conclusion.

Drummond's wedding with Phyllis is interrupted when the inspector guarding their gifts is killed. He tries to trace the killers and uncovers the mystery of diamond counterfeiters.