The devil has arrived in Salem, but the witches who summoned him find that he has deceived them. His plans will bring nothing but slavery and death to humanity. Only one woman can stop him: his mother Mary Sibley.
Mary can prevent the devil from doing more harm, but in return she must make an incredible sacrifice. Mary tells John of her resurrection, after which she leaves him to do what is necessary to keep evil at bay.
Michael teams up with Vaughn in order to bring down John Barrett, the man behind the Bible book code. Meanwhile, defence attorney Adam Scott asks for Michael's help following his daughter's kidnapping.