Martin Freeman as Dr Watson filming the 'Sherlock' TV show at St Bart's Hospital in London. In this scene, Watson, played by Martin Freeman shouts for Sherlock and runs over to see what is going on. Just as he runs over he collapses in a heap. As he rises in a daze, a hooded figure wanders over lowers his hood then grabs Watson and hypnotises him and puts him to sleep. As Watson lays on the ground the meddling hypnotiser alters the time on Watson's watch, gives him one last mind blast with his open palm before making a quick getaway with his hood back up. But wait who is this mystery hypnotist... It's the one and only mind master Derren Brown. Now that's a turn up for the books. They are filming season 3 of Sherlock Holmes, carrying on from where he leapt off the top of St Barts Hospital, in a suicide bid to save his friends from the dastardly Professor Moriarty. A fatal leap that only Sherlock could find a way to survive. It looks like this is the episode where you find out what happened to the heroic detective.