Returning home from a shopping trip to a nearby town, bored suburban housewife Laura Jesson is thrown by happenstance into an acquaintance with virtuous doctor Alec Harvey. Their casual friendship soon develops during their weekly visits into something more emotionally fulfilling than either expected, and they must wrestle with the potential havoc their deepening relationship would have on their lives and the lives of those they love.

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.