The series consists of three books: The Lost Prince, The Iron Traitor and The Iron Warrior.
Call of the Forgotten contains examples of the following tropes:
- Back for the Finale: Grimalkin, the Wolf and the witch all return near the end (although Grimalkin has had a few appearances before), and Ash and Puck get another scene of fighting side by side, like back in the original series.
- Brains and Brawn: Ethan (brawn) and Kenzie (brains), especially later on. It's actually pointed out by both of them.
- Cast from Lifespan: Kenzie trades a month of her natural lifespan to Leanansidhe to gain the Sight. Later Ethan has to trade an entire year for the right to use the trod to the Deep Wyld, where they hope to find Annwyl.
- Distant Finale: The epilogue takes place eight months after the end of the main storyline.
- FaceHeel Turn: Keirran at the end of Iron Traitor. The plot of Iron Warrior largely revolves around bringing him back.
- Guile Hero: Kenzie, especially nearing the end. She bargains and tricks her way through the entire Nevernever and manages to resolve situations Ethan would have solved with violence.
- Heroic Sacrifice: Annwyl in Iron Warrior. It was clear from the very beginning that she'd die if Keirran destroyed the amulet and regained his soul, but she also ended up Taking the Bullet in a strike meant for Ethan.
- Ill Girl: Kenzie has leukemia and isn't sure how long she has left to live. She seems better in the epilogue though.
- Plucky Girl: Giving up is not in Kenzie's vocabulary.
- Spoiler Title: The Iron Traitor hints at Keirran's betrayal at the end of the book.
- Troubled, but Cute: Ethan, so very much. He only acts like a jerk because he doesn't want anyone to get caught up in his faery business by getting too close to him.