In space, no one can hear you scream, but they can sure hear you scratching your head as you try to make sense of the sprawling “Alien” universe. While Ridley Scott’s 1979 haunted-house-in-the-cosmos ...

The big twist in Alien: Covenant is the revelation that a character from Prometheus, Mr. Weyland’s first android prototype, “David” (Michael Fassbender), not only survived the first film, but ...