Lord of the Vampires by Jeanne Kalogridis

After the death of his half brother, Stefan, at the hands of Vlad Tsepesh--also known as Dracula--and after the destruction of his vampire father, Arkady, also at the hands of Vlad, Abraham van Helsing has traveled the world slaying many vampires. With every vampire he destroys, Bram becomes stronger and Vlad weaker, and soon Bram hopes he will be able to finally kill the fearsome vampire who has kept the Tsepesh family enslaved through a centuries-old blood ritual. But a desperate Vlad and his vampire great-niece, Zsuzanna, summon help from the most powerful, brutal, and beautiful vampire of all--Countess Elizabeth of Bathory. Bram learns of their plot to destroy him, and makes his own move to strike out at Vlad before Vlad can put him to death. He teams up with a courageous band of humans as he hunts Vlad--including Mina Harker and John Seward--and they finally succeed in killing the head of the Tsepesh clan, just as Bram Stoker foretold in Dracula. But the terror does not end with the death of Vlad, for there is another force that drives Vlad, Zsuzanna, Elizabeth and all the vampires, an ancient entity more evil than anything Bram has ever encountered: the Lord of the Vampires. And for Bram to defeat this dark lord, he must once again risk losing his very soul, to save not only his family, but humanity as well. In her final book in The Diaries of the Family Dracul trilogy, Jeanne Kalogridis brilliantly melds her own fascinating story of the Tsepesh family with that of Bram Stoker's classic, Dracula. Told in diary form like the first two books and Stoker's own chilling tale, LORD OF THE VAMPIRES reveals the dark, startling truths behind the original Dracula.

This book is part of the "The Diaries of the Family Dracul" series.
Here are some other books from this series: