Fresh off the success of Disturbia, scribe Christopher B. Landon is set to pen psychological thriller The Flock for Warner Independent Pictures. Set in contemporary times, story revolves around three teens accused of practicing witchcraft. Girls endure terrifying consequences as a result of the ensuing hysteria and scapegoating. Jason Blum's Blumhouse is producing. Studio specialty arm picked up the project based on Landon's pitch. Landon penned "Disturbia" with Carl Ellsworth based on a story by Landon. The DreamWorks thriller has done strong business at the box office, earning $60.1 million and holding the No. 1 spot for three weeks until it was bumped by "Spider-Man 3."