Back at the National , now on the South Bank , his next turning point was Peter Hall 's premiere staging of Harold Pinter 's Betrayal , an unexpectedly subtle performance â '' a production photograph shows him embracing Penelope Wilton with sensitive hands and long slim fingers ( the touch of a master clock-maker ) . Back at the National , now on the South Bank , his next turning point was Peter Hall 's premiere staging of Harold Pinter 's Betrayal , an unexpectedly subtle performance - a production photograph shows him embracing Penelope Wilton with sensitive hands and long slim fingers ( the touch of a master clock-maker ) .