Proving once again that few things are as unsettling as children wearing Halloween masks, IFC Midnight has debuted the trailer for "Hellions," the trick-or-treat horror thriller from director Bruce McDonald.

Chloe Rose ("Degrassi: The Next Generation") stars as 17-year-old Nora, who after learning she's pregnant, just wants to stay home on Halloween. But then a knock at the door delivers a gaggle of pint-sized demons who want just one thing: Dora's baby.

Arriving Sept. 18 in select theaters and on demand, "Hellions" also stars Robert Patrick, Rossif Sutherland, Rachel Wilson, Peter DaCunha and Luke Bilyk.