Royal Court Jerwood Theatre Upstairs, (***)
Maybe one should always beware plays with letters as cast members. It never bodes well. E V Crowe has been steadily building a reputation as a writer of taut, stringent control since her debut, Kin (2010) followed by the positively garrulous (by her standards) but impressive Hero (2012) with Daniel Mays. Last year, Brenda, a study in mystery and abuse, premiered at the High Tide festival and certainly took no prisoners. Nor does her latest, The Sewing Group.