EHT - Bulletin for the Center of Children's Books

"Oppel handily inserts teen drama into the real-life Bone Wars of the nineteenth century while exploring the conflicting ideologies of the First Nations people and the scientists.... Sam and Rachel are well-drawn characters, Rachel especially breaking with feminine stereotypes.... Fascinating for readers interested in the romance, the paleontology, or the frontier history."

- Bulletin for the Center of Children's Books