David Bowie as Thomas Jerome Newton in 'The Man Who Fell to Earth'; a Xenomorph in 'Aliens'; Scarlett Johansson as the Female in 'Under the Skin' A casual viewer might assume that if you've seen one ...

With a timeline as knotty as a Xenomorph's biomechanical skeleton, it's not the easiest thing in the world to work out how to watch the Alien movies in order. Alien: Earth's first season wrapped up ...