Blood Red Sky (also known as Transatlantic 473) is a 2021 British-German action-horror thriller directed by Peter Thorwarth, released on Netflix on 23 July 2021. The plot follows a widow, Nadja (Peri Baumeister), who secretly hides her vampirism under the guise of leukemia while flying with her son, Elias, to New York for medical help. When a gang of ruthless hijackers—including the sociopathic Eightball—take over the plane, Nadja is forced to unleash her vampiric powers to fight them, leading to a chaotic bloodbath. The situation escalates when Eightball injects himself with Nadja's blood and transforms into a rival vampire, forcing her to sacrifice herself to the morning sun to prevent the monsters from escaping, though Elias's blood saves her, forcing her to flee to protect her son. The film received positive reviews, and in 2025 IndieWire placed it on its list of the "25 Scariest Movies on Netflix."