With the help of Issac, Mary devises a plan that she hopes will rid her of both Mercy and Increase. John has been falsely accused of witchcraft and awaits trial, while Anne learns a dark truth about her heritage from her father.

Mary must choose between fleeing Salem with John or completing the Grand Rite, and Tituba reveals a long kept secret that could sway her decision. Meanwhile, Increase closes in on the witches, and the Hales prepare to go into hiding.