Unsupervised Detention

Tight sketch comedy by gifted young players and, though some scenes suffer from a too-actorly approach, there are more hits than misses and evidence of a genuine facility with the surreal. The introductory premise of bored schoolkids in detention dissolves quickly, letting the cast hotfoot through broadcast news spoofs, songs about tasty placentas and a strangely captivating vegetable-based reboot of romantic literature.

Gilded Balloon Teviot, 622 6552, until 31 Aug, 8.15pm, £9–£10 (£8–£9).