You had to make everything much more truthful for the camera. With the stage it's a given that it's going to be theatrical.

We did every scene together, every day for four months, and it could have been a disaster, if we didn't get on, but we clicked straight away. Elijah Wood is just the nicest guy.

To me, Elijah Wood is one of the best actors of my generation. He's so incredibly present and in the moment, when you're working with him, and then we just chat away about anything off camera because he's a lovely guy.

Dirk Gently [from Dirk Gently's Holistic Detective Agency], needs a sidekick, as all good detectives do, and he gets this message from the universe that this guy, Todd Brotzman, played by Elijah Wood, is the guy to help him through this mystery. But of course, that doesn't really explain the breadth of it.

I'd seen Elijah [Wood], when I was a little boy, in The Good Son. And then, I was a huge fan of The Lord of the Rings. It took awhile to get over that whole, "That's Elijah Wood - Frodo, from The Lord of the Rings." I was a mega fan of that. I went to the all-day screenings of the director's cut, where you could see the really long versions of all three movies, in one day.

I think Dirk [Gently] thinks that he's a brilliant detective, but he's the worst detective, ever. He does have this particular skill, which I suppose you might call a really bad superpower because it's just not very helpful. He is able to sense the connections between things and he's nearly always right, but the problem is that he never knows what to do with any of those messages that he receives from the universe, so he just acts on things and gets himself into terrible trouble, all the time.

One of the joys of this show [Dirk Gently's Holistic Detective Agency] is that each of those characters could be starring in their own show. It's only as the show goes on that you realize how they interconnect. They're all moving towards one another inexorably, to meet at a certain point.