Ew ew ew ew ew. There are many reasons why I'll be first in line to see Severin Fiala and Veronika Franz's Goodnight Mommy, which recently screened at both Venice and Toronto festivals. But there's just one reason why I'll be watching it through my fingers. It's alluded to in the above trailer, and in the exclusive clip only to be found at TwitchFilm, it's explicated most effectively. Ew ew ew ew ew.