Imagine you're writing a review. You're staring at a blank page, the heavy pencil poised in your unwilling fingers. A shaft of light reaches in through a gap in the ikea blind, you can hear the faint sound of a television tuned to This Morning. It's almost like you're watching Ring.

"Watching" only in the sense of being in a theatre: actually it was our ears doing all the work tonight, our ears and our imaginations.

Ring is a sound installation, but it's also a story, a radio play, an atmosphere, and that feeling that someone's walked over your grave. Carried out in a confusing level of complete darkness (so dark I can't remember the last time I experienced anything close) with cleverly directional headphones the story is told by multiple voices, all apparently in the room with you.

I have to confess my initial reaction was complete panic, I've never had to talk myself down in quite such a way from running out of a theatre (not even at panto). But once you've got that under control the sensation of only having one sense stimulated is completely dominating. I'm not worried about revealing plot spoilers as there wasn't a huge amount of plot to speak of, but rather of spoiling the utterly unique experience of absorbing theatre completely through your ears.

At points the script and the acting didn't quite live up to the technical skill of the sound design and execution, but to be sat in a group of 100 people on the stage of the Playhouse in total darkness, £12 seems like a bit of a steal.

Would I tell my Dad he absolutely must see this show? Not really. But if you're interested in what it means to perform and what it means to be an audience, or you just like being given the willies then this show definitely won't disappoint.