A spiritualist medium holds a seance for a writer suffering from writers block but accidentally summons the spirit of his deceased first wife which leads to an increasingly complex love triangle with his current wife of five years.

An English mystery novelist invites a medium to his home, so she may conduct a séance for a small gathering. The writer hopes to gather enough material for the book he’s working on, as well as to expose the medium as a charlatan. However, proceedings take an unexpected turn, resulting in a chain of supernatural events being set into motion that wreak havoc on the man’s present marriage.