Complex sentence: Quilty then appears unseen in the dark to Humbert and goes on to have an awkward conversation with the protagonist-unlike in the novel, the viewer recognizes Quilty, who interacts with Humbert for a considerably larger period of time.
Split into simpler sentences: Quilty then appears unseen in the dark to Humbert and goes on to have an awkward conversation with the protagonist. In the novel, the viewer recognizes Quilty, who interacts with Humbert for a considerably larger period of time.