Moffats Clue Words to Season 3 of Sherlock = Rat, Wedding, Bow Rat = Could be alluding to the Giant Rat of Sumatra, mentioned in the old Sherlock Holmes story - The Sussex Vampire. Wedding = Johns wedding? Bow = His Last Bow - an old Sherlock story. Heres a coincidence (not) - The last episode of season 3 of Sherlock will be called His Last Vow. Also, His Last Bow was the last story chronologically of the old Sherlock Holmes stories.
Just see Ron’s eyes in Deathly Hallows Part 2 when Harry was “dead”. Holy God. He is looking like: “You killed my best friend. Prepare to face my wrath. Only the dead can know peace from this evil.” #HarryPotter