For those turned on to Butterworth by 2011's Jerusalem, the new work clearly continues his fascination with self-destructive outsiders in pastoral isolation. The River may lack the Rabelaisian exuberance of Jerusalem but offers more intimacy and outright strangeness. Those attending simply to ogle Jackman (buff and charismatic as always) get an extra treat, if they can appreciate it: a movie star facing an acting challenge in an exceptional piece of stage writing.