Lines of faint light began to form, verticals and horizontals, sketching an open cube around the stage. The restaurant’s lights had come back up slightly, but the framework surrounding the stage might have been constructed of frozen moonbeams. Head bowed, eyes closed, arms rigid at his sides, Riviera seemed to quiver with concentration. Suddenly the ghostly cube was filled, had become a room, a room lacking its fourth wall, allowing the audience to view its contents.