Sherlock is lauded throughout Britain for his numerous triumphs of detection, the most famous of which was the recovery of Turner's masterpiece, "Falls of the Reichenbach." The media love him, his deerstalker hat, and his friend, "confirmed bachelor" John Watson. But wary of a tabloid culture that devours its own, John warns Sherlock to keep a low profile. Meanwhile, Sherlock's arch-nemesis, the criminal mastermind Moriarty, emerges from the shadows and into the spotlight with a menacing vow and a cat-and-mouse game conceived entirely for the object of his obsession. While John worries about a pending tabloid expose of his friend and Moriarty's promised final problem, Sherlock continues to assist Lestrade solving crimes. But eventually even Sherlock must turn his absolute attention to the unhinged, evil genius' threat, "I owe you a fall."