Theatre should be an adventure. At least some of the time. But often it isn’t. So much of the time it’s rather predictable and, dare I say, a bit boring. After going to the theatre for many years, the whole experience is so well known that every cell in your body moves through the street, into foyer and then into your seat without half your senses being aware of the process. So it’s great that with their latest show, Invisible Treasure, theatre-makers fanSHEN join a cohort of groups whose aim is to shake up audience expectations.