Lyn Gardner, The Guardian Mon, 2005-07-25 01:00

In Play, the three protagonists seem doomed to repeat themselves and their banalities for infinity, forever under interrogation by an almighty searchlight. In Not I it is obliteration that beckons, the final putting out of the light. Billie Whitelaw described performing it as ''falling backwards into hell, emitting cries''. Watching it is like falling backwards into hell, hearing cries.