The Blood Between Us (Hardcover) by Zac Brewer

9780062307910. New condition. Hard cover. Language: English. Pages: 288. Sewn binding. Cloth over boards. 288 p. Intended for a young adult/teenage audience. Growing up, Adrien and his sister Grace competed for everything. It wasn't easy being the adopted sibling, but Adrien tried to get along; Grace didn't. When their scientist parents died, they drifted apart. In their senior year, they're both back at the boarding school where their parents taught. Life gets more complicated when Adrien starts to suspect that Grace might be stealing their parents' research and claiming it as her own--or worse, that she was involved in their deaths.