Salem's leading witch, Mary Sibley, faces both foreign and domestic challenges to her authority

Mary initiates the second act of the Grand Rite. Alden returns to Salem

Mary receives help from a former foe to keep Salem in the grasp of the witches

Anne explores her supernatural side. Mary receives a chilling warning

Mary and her tormentor, Countess Marburg, meet face-to-face

Countess Marburg arrives in Salem and threatens Mary's stronghold on the city

Mary and Countess Marburg keep up appearances while continuing their covert battle for Salem

Countess Marburg's achilles heel is revealed

Mary makes a sacrifice to save her son from Marburg

When Mary and Alden join forces, Alden gets his first test in fatherhood

Mary has a public fall from grace. Alden and Cotton try to save the boy's soul

Mary makes a last ditch effort to stop Countess Marburg's attempts while alliances shift as surprising truths are revealed

Mary refuses to believe that her son is still alive while the Countess does everything she can to impress the boy. Ann tries to convince Cotton that she uses her powers for good and Alden balances between life and death