Vampire Empire: The Kingmakers by Clay Griffith and Susan Griffith

Synopsis:
Empress Adele has launched a grand crusade against the vampire clans of the north. Prince Gareth, the vampire lord of Scotland, serves the Equatorian cause, fighting in the bloody trenches of France in his guise as the dashing Greyfriar. But the human armies are pinned down, battered by harsh weather and merciless attacks from vampire packs.
To even the odds, Adele unleashes the power of her geomancy, a fear- some weapon capable of slaughtering vampires in vast numbers. However, the power she expends threatens her own life even as she questions the morality of such a weapon.
As the war turns ever bloodier and Adele is threatened by betrayal, Gareth faces a terrible choice. Their only hope is a desperate strike against the lord of the vampire clans—Gareth’s brother, Cesare. It is a gamble that could win the war or signal the final days of the Greyfriar.

Review:
This is the third and final installment in the Vampire Empire trilogy. Adele is now the Empress, and humanity has declared all-out war against the vampires. Empress Adele can now use her geomancy against every vampire on earth, but that would mean the death of her beloved Gareth as well as genocide. Meanwhile, Gareth has decided he needs to assassinate his brother and claim the throne in order to save humanity and vampires from more destruction. But the deadly Flay still stands in their way. And traitors in Adele’s midst may mean the death of both Gareth and Adele.

Treason, betrayal, romance, revenge, war, and military strategy – this is a fantastic conclusion to an epic fantasy trilogy. Cleverly combining vampire horror with steampunk, alternative history Vampire Empire is a trilogy fans of fantasy or vampire fiction should not miss. With strong characters, forbidden romance, action, suspense, and intrigue – I can’t recommend this one enough. The Kingmakers is a solid, riveting and extremely satisfying finale that had me on the edge of my seat till the very end.