At work, there's another threat for Eustacia to deal with. A PhD student is desperate to get access to her poisonousplant collection and begins to stalk her. When she refuses to help him, he starts buying illegal synthetic plant toxins from an unknown source then turns up dead.
Once again, Eustacia is the link. With no leads and the body count rising, Eustacia, now firmly in the frame, is left with no choice but to investigatethe deaths in earnest herself, however dangerous it may become.