St Nicholas Roman Catholic Church and School, the Bronx, New York, 1964.

Sister Aloysius Beauvier. School principal. Driven by fierce conviction and moral certainty. Unafraid of confrontation.

Sister James. Inspired by the joy of teaching; devoted to her pupils. Impulsive, chaste and impressionable. Eager to believe the best of everyone.

Father Brendan Flynn. Charismatic preacher and teacher; intent on bringing the Church closer to the community. Working class, basketball player, wears his fingernails long.

Mrs Muller. Mother of Douglas, 12-year-old pupil and altar boy.

Suspicion. Certainty. Judgement. And Doubt.

John Patrick Shanley is the author of numerous plays and has written extensively for TV and film. He was the winner of the 2005 Pulitzer Prize and Tony Award for ‘Doubt’, which later became an Oscar-nominated film.