Austrian Horror Film GOODNIGHT MOMMY-Mommy Dearest from Hell

GOODNIGHT MOMMY is of thehorror genre.  It gets under your skin in the most sinster way possible; it's believable with mounting tension.  Identical twin brothers, Lukas & Elias (played by Lukas & Elias Schwarz) are inseparable & indomitable.  Their mother returns to their contemporary home in the isolated, paradisal countryside swathed in bandages.  Her face reveals little but bruising and piercing eyes.  This movie is a molten mix of Children of the Corn, Mommy Dearest, The Bad Seed, Parent Trap and Misery.  It doesn't take long for the boys to question the veracity of the person posing as their mother.  The mother is both physically abusive and mentally cruel, favoring one child & devising a wedge between the siblings.  The dir/screenwriters (b. Austria 1985) Veronika Franz & Severin Fiala maintain a firm grip on both creepiness & credibility.  The austere filming oozes between shadow & light, innocence and cruelty.  The tempest augurs in the explosive climax you may see coming.  This in no way mitigates the purgatory created by this disturbing & frightening film.  Good luck getting a good night's sleep after seeing GOODNIGHT MOMMY.