Two angelic 9-year-old twin boys arrive home to find their mother in the hallway with a face all wrapped up in plastic surgery bandages. Mommy needs her rest in order to recover—never mind that she lurks around in her bedroom poking at her bloodshot eyes or pretends to be sleeping when she’s really having a snack.

After awhile, mommy’s strange behavior convinces the boys that maybe she’s not their mommy at all and that’s when the games begin. Don’t worry! They’re just little boys … who keep an entire glass aquarium filled with cockroaches in their room. Totally normal, right?

I’ve seen too many horror movies with twins to be surprised at the ending of this one, but it was still pretty horrifying. Here’s a hint: you’ll never be able to look a tube of superglue quite the same way again.

{Goodnight Mommy screens one more time 5/18, 9pm at SIFF Cinema Egyptian}