Upon his arrival, feared witch hunter Increase Mather wastes no time taking control of the witch hunt and Salem. Mary fears that Increase will discover her husband has been spelled, and enlists the help of Isaac to deter him from uncovering the truth.

While Mary deals with Mercy's betrayal, Tituba must endure the torture inflicted upon her by Increase in his newly founded "House of Pain". Meanwhile, Anne stumbles upon one of her fathers artifacts and suddenly finds herself far from home.