All but abandoned by her family in a London retirement hotel, an elderly woman strikes up a curious friendship with a young writer.

When ambitious analyst Lincoln Mathers (played by Doug Cockle) relocates his family from New York to London, his wife Sarah (Sara Stewart) discovers a new disturbing power and becomes hostage…

Four strangers are summoned to the basement of an abandoned house by a mysterious entity known only as The Sentinel. One after another, they are forced to witness heinous deeds…