Abigail turns the court against Mary by pretending that Mary is sending her spirit out on her. She gets all the girls to go along with it and Danforth believes it.
In Act III, Hale really begins to question the accusations in the court. He is seeing how righteous people, like Rebecca Nurse, being accused. Paris is just worried about his reputation which is linked to Abigail and his daughter Betty. He is completely behind the girls and isn't bothered by the accusations. He keeps trying to convince Danforth that Proctor and others are trying to bring the court down.