Ridley Scott’s career is usually discussed through the giants first: Alien for sci-fi horror, Blade Runner for cyberpunk, Gladiator for the modern historical epic,The Martian for survival cinema, and now The Dog Stars, his upcoming return to science fiction after nearly a decade away from the genre. But somewhere between his mythic worlds and futuristic nightmares sits one of his most punishingly grounded films, which is now streaming on Peacock.