One aspect of the afterlife of any great artist is the dream of new work turning up – an unknown Manet in a junk shop, a lost Beethoven score misfiled in a music library. By living to almost 90, Arthur Miller was able to leave a long shelf of plays, but the British celebrations of the centenary of his birth include a surprise find that fell through the gaps – The Hook.Tantalisingly, the subject matter overlaps with two of his theatre masterpieces. It shares with A View from the Bridge a setting in the Brooklyn docks, among the longshoremen who unload the boats, and its theme of the necessity but risk of standing up on issues of conscience previews The Crucible. That witch-hunt play was heavily influenced not just by Elia Kazan’s betrayal but by Miller’s adaptation