There are flaws, sure, and logical lacunae here and there, but it lingers in the memory long after the final credits roll.

This one slips its claws under the skin and then refuses to retract, latching on in such a way that this vicious chiller leaves a lasting scar.

The Harbinger is the kind of horror movie that becomes personal for each viewer; if one is not afraid of its story's more tangible concepts, Mitton does a credible and careful job of evoking the lasting ethereal ones.

An anxious and existential horror film the likes of which could only be made in a world that’s still reeling from those emotions to this day.