Actress Natasha Henstridge has joined writer/producer Kevin Williamson’s small-screen adaptation of author L.J. Smith’s witch-themed book series “Secret Circle.” The 36-year-old Canadian starlet will play Dawn Chamberlain, the vice principal of New Salem High School.

“Secret Circle” stars Brittany Robertson (”Life Unexpected”) as a California teen named Cassie who discovers she’s a witch while living with her mother in New Salem. Henstridge’s character is a former friend of Cassie’s mother and knows all about the 300-year-old coven of witches that rule the town.

Williamson, the creative force behind the Scream and I Know What You Did Last Summer films and the TV series “Dawson’s Creek” and “The Vampire Diaries,” is penning the pilot for The CW and will serve as executive producer.

The show costars Shelley Hennig as head witch Diana, Thomas Dekker (Nightmare On Elm Street) as Adam the eldest member of the coven, and Jessica Parker Kennedy (Now), Phoebe Tonkin (Bait 3-D), and Louis Hunter as members of the circle.

Henstridge is best known for her portrayal of naked, tongue-kissing alien SIL in 1995’s Species. She reprised the role in 1998’s Species II and briefly in 2004’s Species III. Not surprisingly, she’s secured a spot on Clatto’s 11 Sexiest Maneater Babes in Horror and Sci-Fi.