A pair of twins called Jenny and Linda move to the countryside with their parents. Once everyone is settled, the twins finally keep chickens and their parents produce home grown crops.
A man from Cornwall visits Baker Street and tells Holmes about a demon, a force of evil, which feeds of livestock, bringing fear to the area where he lives. Will Holmes look into the matter?
Two explorers called Tom and Jerry go underground, where they meet a descendant of the lost continent of Lemuria and get taken to an underground city called Talos.