Whereas 28 Years Later wrestled with ideas about British nationalism, isolationism, and patriarchy, DaCosta’s Bone Temple is an even darker, gore-slicked thing that slithers around in your skull. Humanity, and the depravity to which it can stoop when religion is perverted, cults flourish in isolation, and children are groomed for violence, are the central themes here. The Rage Virus is firmly a B-plot, and humans prove far sicker in their impulses than the infected.