Shudder's Host, directed and co-written by Rob Savage, is this peculiar moment's The Blair Witch Project, a landmark film that provides insight into not just these dark times via the technologies that have evolved from our collective woe, but also how we ourselves have evolved, changed in unexpected ways by the products of our hands. Never so much as to lose touch with what scares us, though. Even the genesis of the project--Host was born of a prank a bored Savage devised to scare his friends on a Zoom chat one evening (a prank posted later on social media, where it gained another half-life)--has its roots in how things that are old-hat (the noise in the attic, the jump scare, the Rear Window effect of being a voyeur to the love and death of loved ones without the power to affect them) don't go away as the tools of our existence change. They adapt. What we've always feared, we fear still. And here we are now with this stuff we've Frankensteined into existence (social media, virtual hosting, Bluetooth, the cloud) without a complete understanding of the doors it'll unlock in our relationship with the universe. We're playing with fire, and Host is a warning no less eloquent for being too late.