Charmed (1998)

S3E13 Bride and Gloom

Title: Bride and Gloom Plot: Prue falls victim to a cunning warlock who uses his shapeshifting abilities to coerce her into a hasty wedding, all to gain access to the Book of Shadows. As this unfolds, Phoebe and Piper find themselves seduced by the allure of dark magic, reveling in their newfound wicked abilities.