„The Fourth Plague” is an intriguing crime novel that was published in 1913, during the early years of Wallace’s career as a novelist. Here again pits a master detective against a powerful crime syndicate, this time with an Italian background. An Italian secret society, burglary, kidnapping, detectives, mysterious artefacts, remarkable coincidences! This is a tale of the Red-Hand, a criminal organization that makes Count Festini, its secret head, the most dangerous man in Europe. But for his hated eldest son, the Red-Hand’s plans for the downfall of the country may succeed. The cat and mouse game about high treasure, a beautiful woman and a bio-weapon never really leaves the ground and grips the reader.