[s1e3] Witch -

The episode subtly hints at Giles' own past with magic , despite his claims to the contrary. It also features a joke from Xander about a "railroad spike," which accidentally foreshadows the arrival of the vampire Spike in Season 2. Buffy The Vampire Slayer, “Witch” Review (1x03)

Buffy and the "Scooby Gang" initially suspect , a fellow cheerleader hopeful, of using dark magic to eliminate her competition. The investigation eventually reveals that Amy’s mother, Catherine Madison , is the true witch. Driven by an obsession with her past "glory days," Catherine used a spell to switch bodies with her daughter to relive her youth. [S1E3] Witch

The episode features one of the series' first major supernatural twists, where Amy and her mother's consciousnesses are swapped. The episode subtly hints at Giles' own past