Criminal Confections (A Chocolate Whisperer Mystery) by Colette London

Hayden Mundy Moore is an expert on everything chocolate, helping clients develop new products and revamp recipes until they're irresistible. But sometimes, a dash of murder finds its way into the mix. . . Hayden Mundy Moore has bushwhacked through African jungles and haggled in exotic markets to find the finest cacao beans and the most flavorful blends. It's thrilling work but rarely dangerous--until a colleague turns up dead at the exclusive chocolate-themed Lemaître resort spa in San Francisco. Adrienne Dowling's heart attack is blamed on an accidental overdose of the secret ingredient used in Lemaître Chocolates' new line. Hayden can't believe that conscientious Adrienne would make that mistake. And between chocolate body scrubs, cocoa mud baths, and a non-stop frenzy of chocolate-based treats, Hayden starts to suspect that she, not Adrienne, was the intended target. Finding a killer among the rival chocolatiers and potential suspects won't just be satisfying--it might save her life. . .