"Hidden in the depths of eighteenth-century London, a secret apothecary shop caters to an unusual kind of clientele. Women across the city whisper of a mysterious figure named Nella who sells well-disguised poisons to use against the oppressive men in their lives. But the apothecary's fate is jeopardized when her newest patron, a precocious twelve-year-old, makes a fatal mistake, sparking a string of consequences that echo through the centuries. Meanwhile...

Catherine Ling was abandoned in the streets of Hong Kong at the age of four, and was schooled in the art of survival. As a teenager, she came under the tutelage of the mysterious Hu Chang - a skilled assassin and master poisoner. As a young woman, she was recruited by the CIA and is now one of their most effective operatives. Then her old friend Hu Chang creates something deadly and completely untraceable - and the chase is on to be the first to get...

Emily and her brother Navin head for Kanalis to find an antidote for the poison that is killing their mother.

Thirteen-year-old Lady Grace Cavendish, favorite maid of honor of Elizabeth I, must solve a murder mystery and clear the name of her betrothed.