Private investigator Flavia Albia is always drawn to an intriguing puzzle - even if it is put to her by her new husband's hostile ex-wife.

On the Quirinal Hill, a young girl named Clodia has died, apparently poisoned with a love potion. Only one person could have supplied such a thing: a local witch who goes by the name of Pandora, whose trade in herbal beauty products is hiding something far more sinister. The supposedly sweet air of the Quirinal is masking the stench of loose morality, casual betrayal and even gangland conflict and, when a friend of her own is murdered, Albia determines to expose as much of this local sickness as she can - beginning with the truth about Clodia's death.