A mesmerising and startling play about voyeurism, power and guilt.

'You ever woken up of a morning wondering if this one was gonna be your last - you ever got that feelin in your stomach as you lay there wonderin that? Like butterflies gone ballistic. Like butterflies gone bad.'

Listening through their thin walls, Amelia and Jason are drawn into the dark and compelling world of their mutual neighbour Jo.

'There is a sly, controlled power in this writing and it is given full rein in Rufus Norris' exquisitely acted production. And now I cannot get it out of my head'- Guardian

'A play about real people with real issues'- Time Out

'The writing is startlingly assured... The understated horror is devastating'- Independent on Sunday