Sherlock: The Sign of Three

SYNOPSIS

John and Mary's wedding day arrives, presenting Sherlock with one of the toughest challenges he has ever faced as he sets about delivering a best man's speech. But soon he is on more familiar ground as mortal danger stalks the reception, leaving the brooding detective to solve the case and stop a killer before the happy couple make it to their first dance. Benedict Cumberbatch and Martin Freeman star in the modern reimagining of Arthur Conan Doyle's classic stories, with Amanda Abbington, Rupert Graves and Una Stubbs.