Herbalist China Bayles's latest adventure takes her to the mountains of North Carolina, where her friend Dorothea Harper serves as the director and curator of the Hemlock House Library, a priceless collection of rare gardening books housed in a haunted mountainside mansion that once belonged to Sunny Carswell, a reclusive heiress. But the most valuable book - A Curious Herbal, created by Elizabeth Blackwell in the 1730s - is missing and Dorothea is...