That gets a full-on laugh out of Metcalfe - it's amazing how easy it is to forget that people are literally from different universes or realities or whatever.

"He's quite possibly the greatest playwright in the history of the English language, where I come from," he explains, shaking his head. "Strange guy, lots of mystery around him. Damn good writer, though. His characters are complex, like real people, only everything they say is written down so you can actually study them."