The film has no psychological depth beyond offering up the occasional cliché - one of the shooters was bullied at school, for instance.

So somebody somewhere one day had a thought: "What if 'Die Hard' except a school shooting?" and not only didn't they immediately check themselves for other symptoms of lead poisoning but thought, "Yep, that's a winner."

It often feels like an insanely poor-taste experiment.

Ritten has made a tone-deaf movie using one of the worst epidemics in American history as the backdrop.