Apothecary. The Londo Chronicles, #1

Joanna Wilder's vow to protect her younger sister is put to the test when Eva vanishes five days before her government-arranged marriage. Has Eva run away with her forbidden lover? Or has she disappeared into the darkness of Londo City, never to be seen again-like so many others?While Joanna searches for her sister, Eva's heartbroken lover decides to blow up the Central Compound of Londo City. The explosion rocks Londo, and the ensuing rioters trample Joanna in the street.
She drags herself to the clinic of Dr. Gabriel Stone-the only man who can save her life and the last person to see her sister alive. What Gabriel does to keep Joanna from dying is something he can never reveal without breaking his own vow, made to his powerful brother, leader of Londo City. But the more he learns of courageous Joanna Wilder, the more he longs to tell her everything. As Londo City descends into chaos for the first time in 500 years, Joanna and Gabriel discover their long-held loyalties shifting-in ways that will transform them forever.
AUTHOR'S NOTE: If you like Victorian London, gothic stories, vampires who are more than just blood-thirsty monsters, slow-to-burn romances, strong female leads, colorful sidekicks and snarky villains, you will enjoy this book.