Digital Press’s review published on Letterboxd:
I believe this is a horror movie made for parents whose fear is that their children are smarter than they are.
If I’m wrong (likely!), and it’s taken at face value, then what we have here is a Damien-like child who manipulates his parents into sheer panic. We are along for the ride, knowing what’s happening but never sure how far it will go. The stress meter is off the charts here, with escalating incidents and chaotic piano riffs backing up each scene.
Joshua is certainly a different kind of movie, though fans of The Omen, Mikey, or even the Twilight Zone episode “It’s A Good Life” will certainly enjoy this creepy tale.