We are all performers. We all put on a show. And we are all alone. The more information we have about each other in the global age, the less we seem to connect.

Suspect Culture's latest show plays a clever game with theatre and convention. With the act of acting and the games we all play, with each other and ourselves.

Four performers play two people, an A&R scout for a record company and a personnel officer, who are marooned in a room in a remote hotel by the sea. There they reveal things and they hide them. David Greig's brilliant text plays as if it were on a continuous loop - like memory itself. We hear the same stories but with a different spin, from a different mouth, or sometimes the same one, only differently. The more we hear, the less we really know. The more they tell, the less they reveal.

This is a hard, cruel, beautiful show, almost mathematical in its precision. The coolness of the performance style is in perfect harmony with the piece's icy images: two almost-strangers in a hotel room, one watching the other, naked, making him or herself come; the faint sounds of life being emitted from a body buried for two days in a car deep within a snowdrift. Like a radio transmitter in space, faint and distant, but unmistakably saying, "I'm here." Here, but alone. Always alone and always just out of reach.

• Till August 30. Box office: 0131-226 2428.