It’s Halloween night in Greendale and all Sabrina Spellman wants to do is go to a Halloween party. Instead, she is confronted again and again that she is no longer a regular teenage girl – now she’s a teenage witch.

Detective Amy Sun is in a tough spot. She’s investigating the death of Bella Rhinebeck, a young woman who narrowly escaped being murdered by a serial killer only to have the leader of the police’s tactical team who saved her become a bit of a stalker. Now she’s dead and police officer Keith Connolly is the number one suspect. But, Amy will quickly learn that something else much more sinister is also at play.