Marshall takes an internship at Barney's company and changes his personality in order to fit in.
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.
