The week in theatre: All My Sons; Ghosts; The Play That Goes Wrong " review
Old Vic, London; Royal and Derngate, Northampton; Duchess theatre, LondonTwo Hollywood actors bring skilful, unstarry performances to All My Sons, Lucy Bailey directs a fine, unstarchy production of Ghosts, and The Play That Goes Wrong remains gloriously sillyA flag of stars and stripes is projected against the theatre's back wall and we see an aerial view of suburban houses: it's as if this were America's very own h…