Ada Palomino Books in Order

Ada Palomino starts this series with a lot of baggage before she is even out of her teens. Readers of Experiment in Terror already know her as Perry’s younger sister, a smart mouth with a rough upbringing in a family where the supernatural never felt far away. In her own books, she finally moves to the center, and the result is darker, younger, and often a little wilder than Perry and Dex’s story.

Ada has grown up surrounded by ghosts, demons, and adults who know more than they tell her. After her mother’s death, things get even stranger. Dreams stop feeling like dreams. The line between worlds gets thin. Guardians, demons, and other beings start treating Ada like someone important, whether she wants that role or not.

That gives the series a strong coming of age shape, even when the horror kicks in. Ada is trying to figure out who she is, who she can trust, and what kind of power she is willing to carry. Her relationships matter a lot here, especially with Jay, and later Max, but the books never forget that the larger fight is about fate, family, and the doors between worlds.

The tone balances terror with attitude. Ada is younger than some of Halle’s other heroines, but she is not passive. She is angry, funny, impulsive, and stubborn enough to keep charging into things that should flatten her. That gives the books energy, even when the mythology gets heavy.

As the series goes on, the scale expands from haunting and dream logic into demon hunting, road trips, and bigger cosmic threats. If Experiment in Terror feels like the older sibling, this feels like the hotter headed younger one, tied to the same universe but with its own voice and its own mess.