The investigation centers on , a top-secret military research base nearby. Rumors of genetic mutations and "super-dogs" swirl among the locals. Using Mycroft’s high-level security clearance (stolen, of course), Sherlock and John infiltrate the facility. They encounter Dr. Stapleton , a geneticist with a missing glowing rabbit, and Dr. Frankland , a friendly scientist who was a close friend of Henry’s father.
Determined to find a rational explanation, Sherlock realizes the "hound" isn't a physical creature, but a . He suspects a chemical agent and tests John by trapping him in a Baskerville lab, triggering a terrifying "encounter" with the beast through the base's sirens and lights. The Revelation of the Fog
This retelling of dives into the psychological fog of Dartmoor, focusing on the intersection of childhood trauma and modern chemical warfare. The Ghost in the Fog