David Edgar is best known for his adaptation of Nicholas Nickleby for the RSC, for whom he also wrote Destiny, Maydays, Dr Jekyll and Mr Hyde, Pentecost and The Prisoner’s Dilemma. His plays at the National include The Shape of the Table, Entertaining Strangers, Albert Speer and Playing with Fire. His most recent plays are Testing the Echo, A Time to Keep, and the stage adaptation of Julian Barnes’s Arthur & George. His best-selling book How Plays Work was published by NHB in 2009. He lives in Birmingham.