The twists are pretty obvious. I feel like simply writing out the plot like that is enough to spoil the entire movie, really, since it's so obvious that So-mi isn't really dead there's not a lot of tension.

Park Shin-yang delivers a wonderful performance as a grieving father on the brink of madness.

Unfortunately, the lack of inspiration gives a stronger impression than anything — cinematography, special effects, themes of parenthood and redemption — might seek to inspire.

Devils Stay has the looks and style of an inventive new horror, but its plot is nothing particularly new and lacks a thematic punch.