Elysium

 
From the publishers:
In 1815, Napoleon Bonaparte is exiled to remote Saint Helena. Amélie Perrault, the daughter of Napoleon's head chef, is determined through healing herbs to rise in importance and is fascinated with the fallen French Emperor. After her beautiful singing voice catches Napoleon's attention, she is drawn into his clash with their British jailers, court intrigues and a burgeoning sexual attraction.
 
Napoleon is soured on love. Since political maneuvers fail to release him, he desires freedom no matter the risk. Amélie suspects someone in their entourage is poisoning the emperor. Now she must uncover the culprit and join in Napoleon's last great battle plan, a dangerous escape.
 
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