Prime Evil

When attractive, youthful Crystal Gregory takes a teaching position at Sunnydale High, she also takes what seems to be an instant dislike to Buffy Summers. Buffy's Slayer sense doesn't detect anything unusual about the teacher. But when you're living on a Hellmouth, nothing is what it seems. Crystal isn't above playing favorites, and her pets - including Willow, Michael, and Anya - are loyal to her in the extreme. This wouldn't bother Buffy...but for the fact that she has found a fresh burn mark on two of the students' necks.