A review by sadiam
Catalyst by S.J. Kincaid

5.0

This was such a satisfying ending to the series without losing the charm that the series originally had. It definitely grows in maturity along with the characters and is much darker than the first two. There were several parts in the second half that had me in tears, both happy and sad.
Overall, I could not more highly recommend this series as an easy, fun, yet still highly engaging young adult science fiction series.