Thunderhead by Neal Shusterman

Rowan has gone rogue, and has taken it upon himself to put the Scythedom through a trial by fire. Literally. In the year since Winter Conclave, he has gone off-grid, and has been striking out against corrupt scythes--not only in MidMerica, but across the entire continent. He is a dark folk hero now--"Scythe Lucifer"--a vigilante taking down corrupt scythes in flames.

Citra, now a junior scythe under Scythe Curie, sees the corruption and wants to help change it from the inside out, but is thwarted at every turn, and threatened by the "new order" scythes. Realizing she cannot do this alone--or even with the help of Scythe Curie and Faraday, she does the unthinkable, and risks being "deadish" so she can communicate with the Thunderhead--the only being on earth wise enough to solve the dire problems of a perfect world. But will it help solve those problems, or simply watch as perfection goes into decline?

This book is part of the "Arc of a Scythe" series.
Here are some other books from this series: