[s2e2] The Hounds Of Baskerville (2026)

That night, Sherlock and Henry venture into Dewer’s Hollow. In the darkness, amidst the swirling mist, they see it: a massive, snarling beast with glowing eyes. The Great Detective’s Doubt

They rush back to the Hollow to find Henry on the verge of suicide, driven mad by the gas. Sherlock explains the truth: Henry didn't see a monster twenty years ago; he saw in a gas mask and a "H.O.U.N.D." t-shirt, murdering Henry's father over the secret of the gas. Henry’s child-mind interpreted the mask and the red goggles as a demon dog. [S2E2] The Hounds of Baskerville

The story begins with , a man haunted by a twenty-year-old memory. As a child, he watched his father torn apart in "Dewer’s Hollow" by a monstrous, red-eyed hound. The trauma has festered into an obsession, drawing Sherlock Holmes and John Watson away from the boredom of London and into the eerie, mist-laden landscape of Dartmoor. That night, Sherlock and Henry venture into Dewer’s Hollow

Back at the inn, the unthinkable happens. Sherlock Holmes—the man of pure logic—is trembling. He confesses to John that he saw the hound. For the first time, Sherlock cannot trust his own senses. This doubt leads to a breakdown of his "Mind Palace," nearly destroying his friendship with John as he lashes out in fear. Sherlock explains the truth: Henry didn't see a

Sherlock, initially dismissive, is hooked when Henry mentions "hound"—a word that triggers a strange flicker in Sherlock's own mind. The Beast of Baskerville

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