Resurrection by Lissa Kasey

Someone is raising the dead from their graves, including an old vampire lover.

When a golem shows up on campus, Seiran searches for a way to unravel it and find its creator. But it is animated with vampire souls and the golem may not be the only one. When he realizes a necromancer is raising the undead from their slumber, Seiran finds himself face to face with a lover he thought long gone.

Gabe went to ground over a decade ago to silence the revenant gaining foothold inside of him. When he is yanked from the earth, his memory a mess of shattered fragments, he finds himself bound to a very powerful witch he doesn’t remember. And someone is trying to use his power to summon the dead.

An army of the dead awakens, and Seiran and Gabe are the only thing standing in the way of a shift in global power. Can they rise to the change or will they become the next victims?