Theres no such thing as a free cruise in Cuban American author Teresa Dovalpages addictively clever new Havana mystery. Cubanborn Mercedes Spivey and her American husband Nolan win a fiveday cruise to Cuba. Although the circumstances surrounding the prize seem a little suspicious to Mercedes Nolans current unemployment and their need to spice up their marriage make the decision a nobrainer. Once aboard Mercedes is surprised to see two people she met through her exboyfriend Lorenzo former Uni