The Diamond of Darkhold (Book of Ember #4)

Firefly & Fern Summary

In this exciting fourth installment of the Book of Ember series, Lina and Doon discover a mysterious diamond that holds clues to their underground city's past and future. As they unravel the secrets hidden within this ancient artifact, they must navigate danger and deception to protect their community and uncover the truth about Ember's origins. This captivating adventure combines mystery, discovery, and the courage it takes to question authority and seek answers.