THE SENTINEL opens in NY. Directed by Michael Winner. Adapted from the novel by Jeffrey Konvitz, with Winner and Konvitz sharing screenplay credit. Loopy, occasionally creepy, Rosemary's Baby/Exorcist mash-up focusing on a demonic coven's efforts to install young a model as new guardian at the gates of hell. Cristina Raines leads a veteran, prestigious cast that includes Burgess Meredith, Eli Wallach, Jose Ferrer, Arthur Kennedy, Martin Balsam, Sylvia Miles, Ava Gardner and Beverley D'Angelo, with cameos from young up-and-comers Christopher Walken, Jeff Goldblum, and Tom Berenger.