Sherlock Holmes races against time to discover the location of a bomb that was planted somewhere in London by an extortionist.

A condemned man that is scheduled to hang the following day uses his last request to ask Sherlock Holmes to prove his innocence of the murder for which he is about to be executed.

Vaudeville escape artist Harry Crocker turns to Sherlock Holmes for help when he is accused of strangling a chorus girl.

Lady Beryl confesses to a murder that was committed at her home, but Sherlock Holmes is convinced that she is innocent of any culpability in the crime.

When Holmes meets an injured man carrying an unconscious woman, he discovers that the man is an engineer who was hired by another man to fix a large hydraulic press, but upon arriving to tackle the job, things did not go as planned.

A cowgirl from a visiting rodeo exhibition requests Sherlock Holmes' immediate assistance after she discovers a dead man in her bedroom.

Sherlock Holmes tracks down a criminal who uses a young girl to lure victims into empty houses, where they are then murdered.

As payment for solving a case, Holmes and Watson spend a weekend at an estate in the Balkans. The weekend turns deadly, however, when a fellow guest is poisoned, and their host is accused of the murder. Will Holmes be the next victim?

After Sir Charles Farnsworth is found dead in his castle, a clause inserted into his will firmly requests that his death only be investigated by Sherlock Holmes. Testing reveals traces of arsenic in Farnsworth's body, and suspects abound.

A boy asks Holmes to help him find his missing father. Upon further investigation, it is revealed that the man is a gambler, and is currently on the run from his creditors. Holmes and Watson soon enter the seedy underworld of gambling.