The road to the finale is littered with dead bodies and red herrings, but Open Grave is more notable for its laid-back approach to storytelling than for its plot twists.

Where the story leads is so disappointing-and hackneyed-it makes the entire journey feel like an enormous waste of time.

The film's aura of mystery only works in the first 20 minutes or so, when it seems effortless; after that it feels like it's working very hard to keep the truth obscured, and in so doing just becomes a colorless slog.

Conventional performances cannot inhibit this twisted, creative horror feature about a houseful of guests with no memories of their past.