Spirit shifters go mad unless we mate four times. Bad enough that fate chose them, then domineering wolf and the tempting vampire, but I don't have time for these irresistibly sexy shifters when my brother's life hangs in the balance. My mother's murderous boyfriend threatens him, and I will do anything to save him-even infiltrate and sabotoge the only academy willing to give me-and my brother-a chance. Infiltrate...