Necromancy

Necromancy is a movie starring Orson Welles, Pamela Franklin, and Lee Purcell. Mr. Cato is the head of a witches' coven in the town of Lilith, where he needs the powers of Lori Brandon to raise his son from the dead.
After Lori Brandon suffers a stillbirth, her husband Frank obtains a job with a toy company in northern California. Frank's new boss, the mysterious Mr. Cato, explains that Frank's position will involve magic. Cato, who seemingly holds enormous influence over the town, is pursuing the power of necromancy and believes that Lori holds the key that will help him resurrect his own dead son.