Final answer:
In Act 3 of 'The Crucible', Mary Warren accuses John Proctor of being 'the Devil's man' and pressuring her into lying about the presence of witchcraft, as she succumbs to the intense pressure and fear in the courtroom.
Step-by-step explanation:
In Act 3 of The Crucible, Mary Warren accuses John Proctor of being "the Devil's man" and compelling her to join him in his effort to overthrow the court. This turnabout occurs after Proctor brings Mary to court to confess that she and the other girls have been feigning possession and witchcraft.
Initially, Mary stands by Proctor, but under pressure and the fear of Abigail's vindictive actions, she breaks down and turns the accusation on Proctor to save herself, claiming that he threatened and coerced her into making her false confessions. The atmosphere of fear and hysteria prevalent in the Salem witch trials is highlighted in this critical moment, as a desperate Mary seeks to protect herself at Proctor's expense.