Scarborough - TNT

Thanks to an emotional performance from Holly Atkins as a 29-year-old PE teacher having an affair with a 15-about-to-turn-16-year-old pupil, the first half of Fiona Evans' well-acted Edinburgh hit is totally compelling in a voyeuristic way. For its London transfer, it has doubled in length and the Royal Court's smaller auditorium is transformed into a meticulously recreated bedroom (complete with peeling wallpaper, en suite bathroom) in a seaside guest house. The audience perches wherever there's an available space – on a window ledge or chest of drawers - and is encouraged to move after the interval, presumably to give a different perspective as, in a neat gender reversal, the older woman with toy boy scenario is replaced by a male teacher and a confident schoolgirl on a dirty weekend away. Word for word,the dialogue is virtually the same, as, on the face of it, is the outcome.The nuanced differences don't quite merit the repetition of this unsettling, sometimes powerful piece, but the hurt and disappointment that these clandestine relationships cause is, perhaps surprisingly, more convincingly evoked in Jack O'Connell's cocky but childishly vulnerable Daz than in his female counterpart.
Royal Court Theatre Upstairs, Sloane Square, SW1 (020-7565 5000). Until March 15. £15- £10