The Vampires Diaries has cast A Different World actress Jasmine Guy, but she won't play a vampire, a show rep tells TVGuide.com.
Guy, 47, will play the grandmother of Bonnie (Katerina Graham), who has discovered that she comes from a long line of witches.
"She looks so young because she's a witch! She's a college professor at the local university who teaches the occult," Williamson told TV Guide Magazine. "Bonnie starts to think she may be a witch, and it turns out they have a lineage of witches in their family dating back to Salem. Bonnie thinks it's all crazy until she starts doing things like lighting fires."