Neil Norman, Daily Express Fri, 2008-11-07 00:00

The lighting shifts in constant rhythm, sometimes illuminating the couple in the throes of a serpentine duet, coiling around each other's bodies while their son looks on from the shadows, excluded from their special relationship. At other times, all three move in and out of thin shards of light, as when Grainger waltzes around the stage with his arms outstretched around an unseen partner in a potent symbol of loneliness and regret.