Centuries ago, Master Gregory (Jeff Bridges), a supernatural champion known as a "Spook," imprisoned the malevolent witch Mother Malkin (Julianne Moore). Now escaped, Malkin prepares to unleash her wrath upon humanity. To stop her, Gregory recruits (Ben Barnes), a "seventh son of a seventh son" with unique potential, to be his new apprentice. Tom must survive intensive training and combat supernatural assassins to defeat the witch queen before the next full moon. Cast and Characters Description Jeff Bridges Master Gregory The last remaining warrior of a mystical order. Ben Barnes The seventh son of a seventh son and Gregory's apprentice. Julianne Moore Mother Malkin The queen of evil witches seeking vengeance. Alicia Vikander Alice Deane A half-witch who forms a connection with Tom. Kit Harington Billy Bradley Gregory's previous apprentice. Performance and Reception Seventh Son (2014)