Possession is a 2009 American psychological thriller film starring Sarah Michelle Gellar and Lee Pace. It is a remake of the 2002 South Korean film Addicted.

Sarah Michelle Gellar is an American actress. After being spotted by a talent agent as a young child, she made her film debut at age six in the television film An Invasion of Privacy (1983). A leading role in the short-lived teen drama series Swans Crossing (1992) was followed by her breakthrough as Kendall Hart on the ABC soap opera All My Children (1993–1995), for which she won a Daytime Emmy Award.