The Rise Of Isaac Books in Order

The Rise of Isaac is Caroline Peckham's early YA fantasy series, and it wears that identity proudly. This is the quest side of her catalog, built around secret worlds, magical trials, family mysteries, and a teenage hero who gets thrown into a much bigger conflict than he expected.

The story follows Oliver Knight, whose life changes when his adopted sister May is struck by a lethal curse. That curse does more than create urgency. It reveals that Earth is only one of seven worlds, each separated by gateways that cannot simply be crossed at will. To move forward, Oliver has to survive a series of tests and challenges while also trying to understand what happened to his family.

Seven worlds means the series keeps moving.

That structure gives the books a nice sense of progression. Each step opens a different part of the setting, with new rules, new dangers, and more of the truth about Isaac Rimori, the feared figure whose shadow falls across the whole saga. The series is interested in adventure, but it is equally interested in how secrets reshape ordinary people once they learn they were never living in an ordinary world at all.

Because this is YA fantasy, the tone is a little cleaner than Peckham's later dark romance work, but a lot of her lasting interests are already here: fast pacing, layered world building, strong emotional stakes, and the sense that survival often depends on who you choose to trust.

Readers who found Peckham through her later romantasy may be surprised by this series, but in a useful way. It shows the fantasy framework she was building before the darker romance worlds got bigger, and it is a good fit if you want more adventure-led storytelling with an ongoing mystery at its center.