In this supernatural drama, John Alden returns to Salem in 1692, after years away at war, to find his hometown in the midst of a witch panic and Mary, the woman he left behind, married to another man.
Following the first death of the Grand Rite, Mary intends to sacrifice another innocent. Meanwhile, John works with Cotton Mather and Issac Walton to try to locate and stop the witches.
A face from John's past comes to Salem, and Mary's plans nearly come apart when she loses control of Mercy Lewis. Elsewhere, Mary's most trusted ally, Tituba, is forced to deceive John to eliminate a threat that endangers her mistress.
Mary struggles to get George back under her control; Mercy and her acolytes flex their growing power.
Alden finds himself the target of fresh accusations; Anne finally discovers the truth about her father.