As kids, they shoved a ravenous witch into an oven. As adults, orphaned siblings Hansel (Jeremy Renner) and Gretel (Gemma Arterton) are the scourge of every spell-caster, hiring themselves out to rid the land of wart-encrusted enchantresses. But Muriel (Famke Janssen), the darkest necromancer of them all, isn’t going down without a CGI-augmented fight. No stranger to one-joke premises, writer-director Tommy Wirkola (of 2009’s Nazi-zombie “classic” Dead Snow) populates this frenzied horror-satire with tons of incoherently staged bloodletting and f-bomb–accentuated kiss-off lines. It’s a grim fairy tale, all right.
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