Long buried secrets finally come to light as someone has been playing a very long game indeed. Sherlock and John face their greatest ever challenge. Is the game finally over?
|Studio :||BBC Wales / Hartswood Films /|
|Crew :||Benjamin Caron / Mark Gatiss /|
|Cast :||Benedict Cumberbatch Martin Freeman Mark Gatiss Sian Brooke Andrew Scott|
|Genre :||Drama Mystery|