Harvey, Roz and Susie explore a mysterious force of evil. Sabrina digs deeper into Ms. Wardwell's intentions. Hilda pursues a new beginning.

A disaster rattles the Greendale community. Desperate to help, Sabrina attempts a new kind of dark magic -- with the assistance of an unusual ally.

Sabrina, Theo, Roz and others attempt to navigate the lines between fact, fiction and fate when a mysterious stranger sets up shop in Cerberus Books.