Sherlock

Two years after his apparent death, Sherlock returns to solve a terrorist threat; John, having moved on with his life and angry that he wasn't told of Sherlock's plan to fake his own death, refuses to help.

Sherlock struggles to deliver the best man's speech at John and Mary's wedding reception; Sherlock tells the guests about past unsolved cases and inadvertently stumbles upon the identity of the murderer and his next intended victim.

Sherlock investigates Charles Augustus Magnussen, a master blackmailer who knows the weaknesses of every prominent figure in the Western world; in his pursuit of clues, Sherlock makes a discovery about Mary that threatens her future with John.