I keep waiting for a good horror movie but they’re really rare. One that I’ve liked in the past was Let the Right One In, haven’t seen the American remake just yet.
Mama is by Andrés Muschietti who’s not really done much before so I suppose this is a good start.
But despite a few good scares, some good acting and occasionally good effects, towards the end the story just doesn’t hold together and slowly drags to a surprisingly weak end. The girls do well though.