Swedish actress Helena Mattsson, best known for her nude turn in Species: The Awakening, is the latest to check into “666 Park Avenue,” a new supernatural pilot based on the book series by author Gabriella Pierce. The show is produced by writer David Wilcox (“Fringe”), Warner Bros. TV and Alloy Entertainment.

“666 Park Avenue” is set in a historic Manhattan apartment building where demonic forces are possessing the tenants. Other than her character’s name—Alexis—no details have been given about Mattsson’s role.

Costars include Rachael Taylor (”Charlie’s Angels’) and Dave Annabel (”Brothers & Sisters”), as the apartment supers; Terry O’Quinn (“LOST”) and Vanessa Williams (“Desperate Housewives”) as the building’s owners; and Mercedes Masöhn (”The Finder”) and Robert Buckley (”One Tree Hill”) as a photographer and playwright couple .