As an unnatural threat terrorises the world, a family's social order is tested when another family arrives seeking refuge.
First of all, the title is a bit of a misnomer: whatever "it" is, it doesn't come just at night!
From a writing standpoint, I won't hesitate to give this movie a firm thumbs-up. I love how these characters approach the situation in an intelligent, resourceful manner; it might actually be the most realistic depiction of a survival situation I've seen since Night of the Living Dead.
Unfortunately, the performance lets it down considerably for me. I'm not a fan of thrillers that adopt an unnaturally hushed, reserved tone; I prefer when they're a bit more energised and, you know, thrilling.
So it's definitely a good movie, but too slow-paced and understated for my taste.
My rating: 70%