1. Julian Fineman. In the novels, Julian is a character introduced in the second book, “Pandemonium.” His father is a public figure, leading the DFA — Deliria-Free America — cause against the Invalids. In the proposed television series, Julian is introduced right off the bat, as a sickly young man who lives next door to Lena’s best friend, Hana, and is confused by his powerful attraction to her, though she’s not particularly interested. Yes — Julian and Hana.
2. Lena’s mother. In the novels, Lena’s mother’s suicide makes Lena long for the cure and fear the dangers of love. In the pilot, it’s actually Lena’s father who she believes died because he was infected with “Deliria.” When she learns some shocking revelations about what actually happened to him, she’s driven to take drastic measures.
3. Ren. The pilot introduces a new character, Ren, another Invalid who is Alex’s best friend. Though Alex falls hard and fast for Lena, he’s oblivious to the fact that Ren’s feelings for him go beyond friendship. She’s a key part of the Invalid’s plan to resist the DFA, and ultimately goes undercover to infiltrate the government she’s planning to revolt against.
4. Pacing. The first episode of the TV series actually covers the entire plot of the first book, in addition to including information about Julian and the DFA that readers didn’t learn until the sequel. Of course, in order to cram all of that into 42 minutes, there are certain moments that are lost — particularly key bonding moments between Alex and Lena, like when he took her to his home in the Wilds, and the first time she was introduced to poetry. We’re hopeful that those things will come into play later.