The graceful domes of Sacré Coeur, the imposing cathedral of Notre Dame, the breathtaking Tour Eiffel . . . Paris is overflowing with stunning architecture. Yet for Tabitha Knight, the humble building that houses the Cordon Bleu cooking school, where her friend Julia studies, is just as notable. Tabitha is always happy to sample Julia's latest creation and try to recreate dishes for her Grand-père and Oncle Rafe.

The legendary school also holds open demonstrations, where the public can see its master chefs at work. It's a treat for any aspiring cook—until one of the chefs pours himself a glass of wine from a rare vintage bottle—and promptly drops dead in front of Julia, Tabitha, and other assembled guests. It's the first in a frightening string of poisonings that turns grimly personal when cyanide-laced wine is sent to someone very close to Tabitha.

What kind of killer chooses such a means of murder, and why? Tabitha and Julia hope to find answers in order to save innocent lives—not to mention a few exquisite vintages—even as their investigation takes them through some of the darkest corners of France's wartime past . . .