While Sherlock (Benedict Cumberbatch, The Last Enemy, War Horse, The Hobbit) accrues unwanted accolades and press in gratitude for his mystery-solving prowess and John pointlessly counsels humility, the insane criminal mastermind Jim Moriarty (Andrew Scott, Lennon Naked) is busy plotting the crime of the century. But bringing Britain to its knees is just a prelude for Sherlock’s arch-nemesis, who orchestrates a perilous cat-and-mouse game with the object of his obsession. In a season finale both mind-blowing and gut-wrenching, the consulting detective and consulting criminal engage in an escalating series of high-stakes face-offs which begin in the courtroom and end in the solution of a diabolical and inescapable “final problem.” Co-created by Doctor Who producers Steven Moffat and Mark Gatiss, The Reichenbach Fall stars Martin Freeman (The Office UK, The Hobbit) and Rupert Graves (The Forsyte Saga) (One episode; 90 minutes, TV-PG)