Book excerpt: Ixchel is a lonely veterinarian fleeing from her past. Finn is a were-jaguar hunting for his future. It starts as a classic case of boy-meets-girl, boy-holds-girl-up-at-knife-point, boy-and-girl-fall-in-love. But what should be a honeymoon-like jaunt through the ruins of pre-Columbian Mexico turns into an action-packed chase through moonlit forests and across crumbling pyramids. In the end, each member of the unlikely pair must make a decision that will change their lives forever. And if the two don't learn to work together, they'll soon lose the game that has turned into a struggle for survival.