Last night, HBO showed, in prime time, Ridley Scott’s reworking of his original Alien movie, Alien: The Director’s Cut. Tonight, HBO shows one of the sequels, or prequels, spawned from this idea of the morphing killer creature from outer space. This 2017 sci-fi thriller stars Michael Fassbender, Katherine Waterston, Billy Crudup – and, of course, that slimy, slippery, deadly shape-shifter.