Season 2 — Episode 1

A Scandal in Belgravia

A case of blackmail threatens to topple the monarchy itself, but soon Sherlock Holmes and John Watson discover that there’s even more to it than that, and find themselves battling international terrorism, rogue CIA agents, and a secret conspiracy involving the British government. The case will also introduce the Sherlock to an antagonist as cold, ruthless and brilliant as himself: Irene Adler.