He shook his head, a mischievous smile on his lips. “And when this is over, there’s some lull-leaf and pizza with our name on it.” “Pretty words and promises don’t work with me, Keeper of Lies and Deceit,” she said, her answering smile dark. “A blood vow then,” he said, the dagger he was holding gliding across his palm. “A what?” “A blood vow is a promise. An agreement made between two people. If either party breaks it, the results are unfavorable,” Theon replied.