Video: Sherlock, The Reichenbach Fall: BBC One, preview It's a shame this brilliant series is ending already, but as it's essentially been three feature films one can see why we get only short bursts. The final mystery is a contemporary retelling of another Conan Doyle classic. The Reichenbach Fall sees Holmes's nemesis James Moriarty (Andrew Scott) pull off his most audacious crime yet, as the Tower of London, Bank of England and Pentonville prison are all sprung open on the same day. Naturally, the villain's plans don't stop there, and a deadly confrontation looms. Martin Freeman is especially excellent as Watson. Sherlock: The Reichenbach Fall is on Sunday 15th January at 9pm, BBC One