Former “Buffy the Vampire Slayer” star and Playboy cover model (July, 2000) Charisma Carpenter is set to star in the Syfy original Haunted High. The 40-year-old stunner will play a sexy librarian at a New England private school overrun by demonic forces.

Carpenter joins a cast that includes M.C. Gainey (Mr. Friendly on “LOST”) as the school’s demon headmaster and everyone’s favorite Mexi-can Danny Trejo as its ass-kicking janitor. Marc Donato (“Degrassi: Next Generation”) and Jonathan Baron (Shadow People) costar as students.

Carpenter most recently starred in Jason Bourque’s survival-frightener Crash Site and Hanelle Culpepper’s psyche-thriller Deadly Sibling Rivalry, in which she plays twins. She is, of course, best known for her role as bratty-babe-turned-vamp-killer Cordelia Chase on “Buffy the Vampire Slayer” and its spinoff “Angel.”

Carpenter will reunite with “Buffy” alum James Marsters on the fifth episode of the seventh season of The CW’s “Supernatural,” premiering on Sept. 23. Entitled “Shut Up, Dr. Phil,” the episode finds Carpenter playing a witch scorned by her husband (Marsters).

Haunted High is directed by Jeffrey Lando (Thirst) and is currently being shot in New Orleans.