Sherlock Holmes and Dr. Watson meet as boys in an English Boarding school. Holmes is known for his deductive ability even as a youth, amazing his classmates with his abilities. When they discover a plot to murder a series of British business men by an Egyptian cult, they move to stop it.
In the opening scene a character is served a cooked bird that they hallucinate comes alive and attacks them. Later on characters walk through a market where someone is holding a dead bird.
Two characters hallucinate that they are on fire. At the end a character is really set on fire, and a building burns down in which there are lots of unconscious villains so presumably they all burn to death.
A character is cut on the face by a ring and this bleeds for the rest of the film. At the end another character is cut on the face with a sword. Another character kills themselves by stabbing themself in the chest.
A child coughs when smoking a pipe. Another is strangled (does not die). A character inhales a poison dart and chokes and gasps before getting set on fire.