Final answer:
In 'The Crucible', Proctor brings Mary Warren to court to confess the girls' lies, but under pressure, she accuses him of witchcraft.
Step-by-step explanation:
The treatment of Mary Warren by John Proctor during their time in court is a central theme in Arthur Miller's play, 'The Crucible', which is set during the Salem Witch Trials. Proctor, one of the main characters, brings Mary to court to confess that the girls, including Abigail Williams, are lying about their accusations of witchcraft. However, under immense pressure and intimidation, Mary's resolve weakens, and she eventually turns against Proctor, accusing him of being in league with the devil. This turn of events ultimately seals Proctor's fate and highlights the hysteria and danger of the witch trials.