There are 3 books in the Poisoner Mysteries series. The newest book is The Borgia Mistress which came out in 2012.

1
Poison

Book cover of Poison

In the simmering hot summer of 1492, a monstrous evil is stirring within the Eternal City of Rome. The brutal murder of an alchemist sets off a desperate race to uncover the plot that threatens to extinguish the light of the Renaissance and plunge Europe back into medieval darkness.

Determined…

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2
The Borgia Betrayal

Book cover of The Borgia Betrayal
Before the Tudors, there were the Borgias. More passionate. More dangerous. More deadly.

From the author of Poison, called “stunning”* and “a fascinating page-turner,”+ comes a new historical thriller, featuring the same intriguing and beautiful heroine: Borgia court poisoner, Francesca Giordano.

      In the summer of 1493, Rodrigo Borgia, Alexander VI,…

3
The Borgia Mistress

The Borgia Mistress

From the author of Poison and The Borgia Betrayal, comes a new historical thriller, featuring the same intriguing and beautiful heroine: Borgia court poisoner, Francesca Giordano

Mistress of death Francesca Giordano--court poisoner to the House of Borgia--returns to confront an ancient atrocity that threatens to extinguish the light of the…