There’s a certain charm to modest genre offerings that most viewers wouldn’t seek out beyond October, when so many of us spend the entire month immersed in all things horror. Though “Madres
” probably wasn’t planning to fall under that umbrella, at least it’s in good company. Arriving as part of Welcome to the Blumhouse
, an annual series of four Amazon Originals produced by, well, Blumhouse, director Ryan Zaragoza
’s socially conscious chiller evokes everything from “Rosemary’s Baby
” to the folklore tale of La Llorona while trying — but only occasionally succeeding — to carve a space for itself in that crowded milieu. It’s the kind of distraction you might pad a midnight-movie marathon with, likely sandwiched between more accomplished films with similar thematic underpinnings.
The film opens with a quote from Joseph Conrad — “The belief in a supernatural source of evil is not necessary; men alone are