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.

Salem's only hope to survive the hell that has risen is to raise the dead.

Mary leaves the comfort of Alden's embrace, determined to do whatever it takes to keep evil at bay.

Mary’s penance for her betrayal takes a deadly turn while Cotton is forced to perform an exorcism of his own.

Cotton discovers life-altering news while Mary learns the power of her femininity.

A traitor is exposed while a ghost from Salem’s past makes a shocking appearance.

Mary and Alden's twisted love is put to the ultimate test and Anne plunges into dark magic.

Anne's pregnancy starts to show as her house-guest goes to work for Mercy. Isaac finds himself in a new role and seems to enjoy it. Plans are made to defeat the dark child and the boy goes to pieces.

Mortal enemies are forced to work together to keep the door to hell locked.

Hearts are destroyed when everyone's true colors are revealed and one bleeds darker than the rest.

Series Finale. Everyone prepares on the eve of Salem's demise.