Fitness Kills — Helen Barer

Healing a broken heart by all means culinary has left food writer Nora Franke with too many unwanted pounds. She welcomes a stint at an elite fitness spa in Baja, where she'll make over the menu, teach a few cooking classes and shed her breakup weight. Sure, Nora knows sticking to a fitness plan is hard. But now it's just plain murder....

A guest is found dead after a fall during a morning hike. Another is poisoned during a low-calorie cocktail party. Curious and more than a little nervous, Nora starts digging into the spa and its staff, which ticks off shady owners growing a cash crop of marijuana -- and now someone wants her dead. But that's all the motivation Nora needs to save her dream job...and her own soon-to-be-skinny behind.