What Them does believe in is evil, manifested in white supremacist racism. The supernatural element merely recreates, as a parable, the evil that men do. You might be able to walk away from that alive, but you can’t walk away from it unscathed, or unchanged. The same can be said of the show itself. Them marks the arrival of a major new talent in showrunner Little Marvin and a staggering achievement in television horror. It’s vital as it is violent. It’s one of the best shows I’ve ever seen.