what conflict between danforth and parris drives the plot forward in act four

It is Reverend Parris who appears as the demagogue in this act of the play, denouncing all challenges to the court as challenges to Christianity and God himself. Parris is paranoid and foolish, demanding that all ninety-one people who attest to the good name of the three accused women be brought in for questioning. Although Danforth is all about keeping his job going Parris is getting a bit too loony, even for Danforth.