Sherlock Holmes investigates a series of so-called "pajama suicides". He knows the female villain behind them is as cunning as Moriarty and as venomous as a spider. Based on "The Sign of Four" and the short stories "The Dying Detective", "The Final Problem", "The Speckled Band" and "The Adventure of the Devil's Foot".

A woman of twenty-one opens her grandfather's will left to her thirteen years earlier, per his instructions. Murder soon follows.

When a leopard escapes during a publicity stunt, it triggers a series of murders.

The Falcon is framed for the murder of a banker and the theft of war bonds. He makes his escape into the mountains where he hides out in a rustic lodge. From here he uncovers a phony war bond operation.

Two industrialists disappear from an airplane while the plane is in the air. Also missing is $100,000. The Falcon investigates and discovers a plot against the government.

The Falcon is called to a young woman's school to investigate a murder. When he arrives, another victim is discovered.

A scientist is turned into an ape man.

In World War II, a British secret agent carrying a vitally important document is kidnapped en route to Washington. The British government calls on Sherlock Holmes to recover it.

During WWII several murders occur at a convalescent home where Dr. Watson has volunteered his services. He summons Holmes for help and the master detective proceeds to solve the crime from a long list of suspects including the owners of the home, the staff and the patients recovering there.

Picpus is a street and a subway stop where a number of murders have been committed. Maigret tries to find the killer.

The Lone Wolf goes undercover in Egypt to foil a Nazi plot to bomb and disable the Suez canal, which is vital to England's war effort.

An insane murderer is on the loose, and gunning for the men who put him away. Will Hay is on the list, and co-opts Claude Hulbert to try and stop him from meeting a grisly end.

A conman poses as a war relief fundraiser, but when he falls for a charity worker, his conscience begins to trouble him.

A private eye is hired by a mayoral candidate to prevent any sort of adverse publicity. It seems that, somewhere in town, there's a talking blackbird who insists upon saying that the candidate will commit a murder. When the killing occurs, the candidate is implicated, and the detective is off on a hectic pursuit of the incriminating crow and the actual murderer.

The wolf escapes from prison but can't get away from police dog Droopy no matter how hard he tries. This is the first cartoon starring Droopy.

In this 13th entry to the Dr. Kildare series, the medical staff of Blair General hospital are challenged with further dilemmas, not the least of which includes a prison inmate who Dr. Gillespie believes belongs instead in an insane asylum.

Japanese master spy Daka operates a covert espionage-sabotage organization located in Gotham City's now-deserted Little Tokyo, which turns American scientists into pliable zombies. The great crime-fighters Batman and Robin, with the help of their allies, are in pursuit.

A film company hires a gangster to mock himself holding up a bank, but he succeeds too well and makes off with the money. But all ends well.

Sadistic killer-for-hire Philip Raven becomes enraged when his latest job is paid off in marked bills. Vowing to track down his double-crossing boss, nightclub executive Gates, Raven sits beside Gates' lovely new employee, Ellen, on a train out of town. Although Ellen is engaged to marry the police lieutenant who's hunting down Raven, she decides to try and set the misguided hit man straight as he hides from the cops and plots his revenge.

A man is shot In the hotel of an imaginary South American country. Clarence and Montès, two inspector students, must solve this murder, but they don't know that dead guy is the USA public enemy No.1.

A detective investigates the mysterious death of a young actress.

A man believed to be dead and buried escapes from his grave and returns to the scene of the crime seeking revenge.

A crooked politician finds himself being accused of murder by a gangster from whom he refused help during a re-election campaign.

A gentlemanly detective known as The Falcon calls on his brother to help him stop the Nazis from assassinating a key diplomat.