A captain saves a kidnapped magnate from a nursing home run by foreign agents.

Merchants hire a foreign criminal to kidnap a scientist for the secret of manufacturing diamonds.

Hugh 'Bulldog' Drummond is a British WWI veteran who longs for some excitement after he returns to the humdrum existence of civilian life. He gets what he's looking for when a girl requests his help in freeing her uncle from a nursing home. She believes the home is just a front and that her uncle is really being held captive while the culprits try to extort his fortune from him.

Algy, Bulldog Drummond's right-hand-man, is getting married. Bulldog attends; on the way home, in the fog, he enters the (apparently deserted) mansion of Prince Achmed in search of a phone. He finds none, but he does find a body - which disappears when he summons a bobby. Bodies keep disappearing as Drummond keeps summoning the authorities, particularly his long-suffering upstairs neighbor, Captain Nielsen; the ever faithful Algy also finds his wedding night disrupted by, among other things, some emergency code-breaking. And of course, there's a beautiful woman (there's always a beautiful woman in the case), Lola, who turns out to be the daughter of the dead man who started all this.

Drummond leads a black-shirted platoon of men from his former unit against foreign interlopers trying to pull England into dangerous overseas entanglements.

Bulldog Drummond is injured when his sabotaged car crashes and Jack Pennington agrees to masquerade as the sleuth. He is enlisted to help Ann Manders find her jeweler grandfather who has been kidnapped by a gang of crooks who want him to copy a valuable necklace they want to steal. Their plan backfires in the British Museum and the film climaxes in an exciting chase on a runaway train in the London Underground.

Captain Drummond becomes a prisoner when he intents to protect a beautiful heiress of an espionage organization.

Bulldog Drummond goes up against foreign agents trying to steal plans for a top-secret aircraft.

The girlfriend of Captain Drummond has been kidnapped by an enemy of Drummond who seeks revenge. But Drummond and his friend Colonel Nielsen at once follow his trail...

Captain Drummond travels to Switzerland in order to marry his girlfriend but the disappearance of a dangerous cargo of explosives makes him delay his plans.

In this episode captain Drummond tries to find the killer of various people. All assassinations were provoked by a diamond of great value, but Drummond will face the danger.

Drummond, his girlfriend and his butler try to free an high post of Scotland Yard who has been kidnapped.

Captain Hugh C."Bulldog" Drummond (John Howard) and his ever-loving and patient fiancée, Phyllis Clavering (Heather Angel). are about to wed but he becomes involved in a plot to steal an atomic disintegrator with a range of half-a-mile. Madman Rolf Alferson (George Zucco)has control of the weapon but Drummond is suspected of the theft and follows the clues to an island colony.

Captain Drummond and his girlfriend want to marry but a hidden treasure in the house in which they want to celebrate their marriage is complicating the situation.

A bank-robbery in London prevents - again - the marriage of Bulldog Drummond with his girlfriend. But this time when the delinquents are caught it will be celebrated at last.

"Bulldog" Drummond is vacationing in his country home in England, and his house if rifled by two thieves. After they leave he finds a card marked with some mysterious letters. Doris Meredith comes by the next day, pretending her car has broken down. Drummond knows better but plays along with her. Drummond calls Scotland Yard Inspector Holmes, and is informed that some of the letters comprise the code-name for a Yard-man who disappeared while carrying some diamonds from France to England. Doris tells Drummond the man is her brother. Drummond uses a decoy to lure the thieves out of hiding, but they adduct Doris.

A Scotland Yard Inspector, seeking a missing heiress, is murdered in his own home. "Bulldog" Drummond finds one of the two women claiming to be the real heiress hiding in a closet in the ...

With a ruthless gang terrorizing London, Scotland Yard calls Hugh "Bulldog" Drummond out of retirement. With the help of detective Helen Smith, Drummond infiltrates the gang under an assumed name. He and Smith become trusted gang-members until the gang's overlord discovers their true identities, and they are taken as prisoners.