“Emergence” is the penultimate episode of Alien: Earth (or at least this first season), so it should be no surprise that all the players and pieces get arranged for an exciting showdown in the finale.

For all his proclaimed genius, Prodigy CEO Boy Kavalier (Samuel Blenkin) failed to account for the probability that his Hybrid creation, Wendy (Sydney Chandler), would turn on him. Many “Alien: Earth” ...