Over the years, Grid Iron has taken us on magical journeys around Edinburgh with its site-specific productions. If this isn't quite vintage stuff, it is none the less quite an experience. Set in an almost derelict house, the show takes us into yellow wallpaper territory as an artist, imprisoned by the tricks that her own mind plays upon her, confronts her demons and a love spoiled by jealousy. The smell of plaster hangs in the air, the walls drip emotion, despair seeps from the floorboards and the telephone always rings.
The piece takes a while to work its magic and is let down by a script that is too mundane to excavate the dark heart of obsession, depression and madness. But, although the woman -played with a winning natural composure by Cait Davis - cannot take flight, the production eventually does. A happier, sunnier time is brilliantly evoked in a bedtime picnic; the eyes of the girl from the Vermeer painting seem to follow the audience around the house; real and imagined ghosts stalk the rooms; love prowls the empty corridors in the form of a song.
Rather too much audience makes it a bit of a squeeze, detracting from the sense that we are ghosts, too, silently observing. But there is flawed magic at work in a show that allows you to peep behind closed doors and into the mind of a woman walled in by her own fear.
· Until August 25. Box office: 0131-226 0000.
