From the author of The Woman in the Garden, Jill Johnson is back with another gripping Professor Eustacia Rose Mystery...Betrayal is a bitter poison . . .After getting caught in the middle of a murder investigation involving her very own poisonous plants, Professor Eustacia Rose was sure she'd never see the inside of a classroom again. With the case now closed, she finds herself back teaching toxicology to a group of grad students, spending time with her plant collection, and even forming a blossoming relationship.But when your work is with poisons, peace is sometimes hard to find. When a man is found dead with a needle in his neck, and a disturbing painting of Eustacia links her and the body, she suddenly finds herself thrust back into a world of crime. And at work, there's yet another threat for Eustacia to deal with. A PhD student is desperate to get access to her poisonous plant collection, and when she refuses to help him, he starts buying illegal plant toxins from an unknown sour