[s2e2] The Hounds | Of Baskerville

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.

The chemical is a volatile, aerosolized fear-gas developed at Baskerville (Project H.O.U.N.D.). It targets the brain’s fear centers, turning a suggestion—a "hound"—into a vivid, lethal hallucination. Sherlock’s Mind Palace reveals that "H.O.U.N.D." was an acronym for the scientists who created the gas in the 1960s. The Confrontation at the Hollow [S2E2] The Hounds of Baskerville

The story closes with a chilling realization. Sherlock’s "Mind Palace" vision of in a prison cell was actually a lingering effect of the gas—a shadow of his greatest fear. As Henry finally finds peace, the episode ends with a teaser: Mycroft releasing Jim Moriarty from a holding cell, where the villain has written "SHERLOCK" all over the walls. O.U.N.D. project? The investigation centers on , a top-secret military