What is it that endows an actor or performer with stage presence? Jane Goodall introduces her exploration of this phenomenon with three disparate examples: Maria Callas commanding an audience of 20,000 at Epidauros, including a ten-year-old girl who would never forget the experience; Bob Dylan recalling the professional wrestler Gorgeous George making an entrance ‘in all his magnificent glory’; and a young Simon Callow, who, employed in the box office at the Old Vic, sneaks into the empty theatre and, setting foot on the stage and declaiming a few lines from Hamlet, is shocked by the ‘physical, or even psychical, power released, a small earthquake’.