Plagued by rumors that she poisoned her fiancé, Lucinda Bromley lives on the fringes of polite Victorian London society, tending her beloved plants--and occasionally consulting on a murder investigation. For the notorious botanist can detect almost any type of poison, especially those derived from plants. But the murder of a lord has shaken Lucinda: at the scene, she picks up traces of a toxin from a very rare species. So rare, in fact, that only one specimen exists in England--and it was stolen from her conservatory last month. To keep her name out of the inquest and to find the murderer, Lucinda hires fellow Arcane Society member Caleb Jones, who runs a psychical investigation agency. But as desire blooms between Caleb and Lucinda, they are drawn into the dark heart of a deadly conspiracy that can be traced to the early days of the Arcane Society.--From publisher description.