The novel follows the story of a mysterious emerald, the Square Emerald, which is stolen from the home of a wealthy London family. The emerald is said to be cursed, and the theft sets off a chain of events that leads to a thrilling and suspenseful investigation. The investigation is led by Detective Inspector Elk, who is assisted by a young woman named Mary. Together, they must unravel the mystery of the Square Emerald and discover who is behind the theft. Along the way, they uncover a web of deceit and corruption, and must battle against a powerful criminal organization. The novel is a classic example of the crime genre, and is full of suspense and intrigue. It is a thrilling read, and is sure to keep readers on the edge of their seats.
By Edgar Wallace · First published 1926 · Genre: Mystery, Adventure, Thriller · 22 chapters