With witch fears rising, Alden seeks the truth of what's really going on in Salem while Mary looks to execute a plan.
Mary discovers who witnessed the witches' ceremony and deliberates a course of action.
An old nemesis of Alden's comes to Salem with secrets that could destroy him and Mary. Mary loses her grip on Mercy.
Mary finds herself at odds with her coven. Alden and Cotton uncover a dangerous witches' relic.
Alden and Cotton find themselves face-to-face with a real witch. Mary forges a solution to the discord within the coven.
