I realised this was going to be more than just a play but wow! I usually write about shows after I’ve seen them but this has already started. First there was the census to complete, then came a mask to print out. There’s a costume to make and now I seem to be involved in some sort of conspiracy, establishing a secret place to exchange messages. Even worse, my wife seems to be on the other side. Punchdrunk take note – this is real immersive theatre: I’m already immersed and I haven’t even reached the event yet. I’ll report on that when I get there at the weekend but it’s already become the theatrical event of the year.