Scooby-Doo and the Witch’s Ghost

After Ben Ravencroft, a famous horror writer of whom Velma Dinkley is a fan, assists her and Mystery Inc. in solving a case at a museum in San Francisco, he invites them to his hometown of Oakhaven, Massachusetts. When they arrive, they find the town's Mayor Corey has converted it into a tourist attraction based on the ghost of Sarah Ravencroft, Ben's ancestor who was persecuted as a witch and executed by the Puritan townspeople in 1657. Ben disputes this, claiming that Sarah was a Wiccan who used herbal remedies to heal the less fortunate and that he has spent years searching for her medical diary to prove her innocence.

While Scooby-Doo and Shaggy Rogers are chased by Sarah's ghost, the others are drawn to the Hex Girls, a gothic rock band led by Sally "Thorn" McKnight, during one of their rehearsals. Fred Jones and Daphne Blake follow Thorn and, upon discovering her seemingly performing a ritual, believe the Hex Girls are witches.

Upon capturing Sarah's ghost, Velma reveals her to be Mr. McKnight, Thorn's father and Oakhaven's pharmacist who posed as the ghost as part of a town-wide publicity stunt meant to stimulate Oakhaven's failing tourist economy and that he did so after digging up Sarah's grave despite not finding her body. Additionally, Thorn reveals the "ritual" she was performing was actually an herbal remedy for soothing her vocal cords and that she is one-sixteenth Wiccan.