The Perfect Poison (Arcane Society Series)
Plagued by rumors that she poisoned her fiancé, Lucinda Bromley manages to live on the fringes of polite society, tending her beloved plants — and occasionally consulting on a murder investigation. For the notorious botanist possesses a unique talent: she can detect almost any type of poison, especially ones that have their origins in the botanical kingdom. But the death of a lord has shaken Lucinda to her core. At the murder scene, she picks up traces of a poison containing a very rare species of fern. So rare, in fact, that only one specimen exists in all of England — and it was stolen from her conservatory just last month. To keep her name out of the investigation and to find the murderer, Lucinda hires a fellow Arcane Society member.