The Last Olympian (Percy Jackson and the Olympians, #5)

by Rick Riordan

Next to me, Annabeth’s knees buckled. I caught her, but she cried out in pain, and I realized I’d grabbed her broken arm. “Oh gods,” I said. “Annabeth, I’m sorry.” “It’s all right,” she said as she passed out in my arms. “She needs help!” I yelled.