Sarah Penner's astonishing debut The Lost Apothecary spans centuries as the mystery of London's apothecary murders is unraveled by Caroline, a historian whose dissatisfaction in her own marriage connects her to the case in a unique way. Caroline's research uncovers the story of a woman named Nella who once sold poisons to women desperate to rid themselves of the terrible men in their lives. But what the historian could never expect is how her own story will intersect with the past.