Bird Box ★★½

This is very much a personal bugbear but anyway: if the villain of your story is a Lovecraftian entity so incomprehensible that to glimpse it induces instant madness, perhaps don’t fill out more than half of your interminable two-hour running time teasing the audience with its appearance — and the notion of a purpose to its machinations — with no follow-through. And maybe lay off the ‘stranger knocking on the door’ trope while you’re at it.