Writer Sir Arthur Conan Doyle could never have imagined just how many creations the world would make of his character Sherlock, when he penned it all those years ago. Yeah it's all about Benedict Cumberbatch right now, but there were many before that. Sure, even Robert Downey Jr gave it a go recently enough! The doc looks at how different each portrayal of the character is, and even features an interview with the man of the moment, Mr Cumberbatch himself.