When Piper, Prue and Phoebe are befriended by a troubled young witch, she hopes they'll take her under their wings and become her mentors. However, things change when she gets lured by a sorceress into pursuing dark magic and the sisters try to break the sorceress' spell over the girl. Meanwhile, as Piper and Phoebe vie for Leo's attention, Prue tries to find time to spend with Andy.
Spoilers ahead. Coverage follows the scope labeled below.
Complete story — includes the ending
A troubled teenage witch, Aviva ( Danielle Harris ), befriends Phoebe with the hopes of joining the sisters, but is an unwitting pawn of a demonic sorceress / priestess named Kali. The sisters investigate and identify the sorceress who possesses Aviva when she refuses to help anymore. Piper and Prue manage to trap Kali in a mirror and Phoebe shatters it, vanquishing her. Aviva drops her bad lifestyle and leaves to reunite with her aunt.