What happens when Alien (1979) and The Abyss (1989) have a child? Born in 2020 they call it Underwater. The daughter of two legends manages to twist and turn her parents upside down and inside out, taking the time to make a few family jokes. Our household was split over her ability to really scare. The claustrophobic me found the whole thing very unsettling. The other half was a little bored by her. But all things considered Underwater (2020) gets on well with her brother Life (2017). They’re your typical brother and sister, sat beside each other, squabbling over who gets more of the sofa.