'A Useful Ghost' Review: Davika Hoorne Is a Spectacular Supernatural Vacuum in Bold Drama

There's a ghost in the machine in writer/director Ratchapoom Boonbunchachoke's humorous and haunting gem of a feature debut "A Useful Ghost." However, this is no mere twisty supernatural horror to be forced into neat genre classifications. It's a work that flaunts all expectations with a disposition as gloriously and gracefully silly as it is incisive and illuminating. For one thing, the machine in question is a humble vacuum cleaner and it is now being possessed by the wandering, lonely spirit of a woman desperately seeking to remain in the land of the living with her husband after . . .