Between Two Ends — David Ward

When Yeats and his parents visit his grandmother's creepy old house, Yeats reunites a pair of pirate bookends and uncovers the amazing truth: Years ago, Yeats's father traveled into The Arabian Nights with a friend, and the friend, Shari, is still stuck in the tales. Assisted by the not-always-trustworthy pirates, Yeats must navigate the unfamiliar world of the story of Shaharazad--dodging guards and tigers and the dangerous things that lurk in the margins of the stories--in order to save Shari and bring peace to his family.