The intrepid reporter and amateur sleuth Joseph Rouletabille becomes involved in the investigation of a hideous crime committed in a room painted yellow, whose door was locked from the inside…
A film projectionist longs to be a detective, and puts his meagre skills to work when he is framed by a rival for stealing his girlfriend's father's pocketwatch.
New York schoolmarm Hildegarde Withers assists a detective when a body of unscrupulous stockbroker Gerald Parker suddenly appears in the penguin tank at the aquarium.
A railroad employee finds out the identity of "The Wrecker", a criminal who is deliberately causing trains to crash. However, before he can disclose the crook's name, he is shot and killed. A passenger aboard the train volunteers to go after the killer and bring "The Wrecker" to justice.
A schoolteacher and amateur sleuth suspects foul play when a fellow passenger on a seaplane gets sick and dies. The third and final film with Edna May Oliver and James Gleason as the astute schoolteacher Hildegarde Withers and the New York Police Inspector Oscar Piper busy solving crimes.
Married book-dealers Joel & Garda Sloane try to clear a friend in the murder of a rival book-seller.
Teenagers try to clear a friend accused of murder.
When Lord Peter Wimsey marries Harriet Vane, a crime author, they both promise to give up crime for good. As a wedding present, Peter purchases the old house where Harriet grew up, but when they try to move in the previous owner is nowhere to be found, until they start to clean the house and find his body in the cellar...
An elevator operator and a janitor team up to solve two murders that may be connected to an illegal gambling operation. Monogram.
A high-society gent has a secret life - he writes murder mysteries and hangs out with the police attempting to solve crimes. This causes him no end of problems when his wife wants to know about his little disappearances and exceptionally late nights out.
Fur theives are looting the traps on the ranch where Roy is foreman and they have murdered one of Roy's friends.
Ronnie Jackson is a lowly baby photographer who secretly fantasizes about being a private detective. When a lovely baroness actually mistakes him for one and asks him to help locate her missing husband, Baron Montay, Ronnie finds himself agreeing. Several days later he is on death row whiling away the hours until his execution by recounting to a group of reporters the bizarre tale of how he ended up there.
Sach just lost his job as an assistant to a private detective, but he wasn't paid. Slip goes with him down to the detective's office to demand payment, but finds the office empty. A woman enters the office and mistakes Slip for the detective and convinces him to take on a case to find her sister after offering a $50 retainer.
Mr. Magoo interprets his nephew's request for $100 as evidence of an unfolding mystery.
In a small town called Skrabbarp in Southern Sweden lives the school teacher Sebastian Pettersson, an amateur detective and one of the most diligent correspondents of the Stockholm police.
A fiction writer begins working on a biography of a pilot who went down during the test flight of a new plane and finds himself soon involved in a series of murders.
Mystery writer Cornelia Van Gorder has rented a country house called "The Oaks", which not long ago was the scene of some murders committed by a strange and violent criminal known as "The Bat". Meanwhile, the house's owner, bank president John Fleming, has recently embezzled one million dollars in securities and has hidden the proceeds in the house, but is killed before he can retrieve it.
Miss Marple believes she's seen a murder in a passing-by train, yet when the police find no evidence she decides to investigate it on her own.
Miss Marple and Mr. Stringer are witnesses to the death by heart attack of elderly, rich Mr. Enderby. Yet they have their doubts about what happened. The police don't believe them, thus leading Miss Marple to yet again investigate by herself.