Splintered: Obsession by Tal Bauer

Everything in Ben's life was perfect. He had it all. The good career. The perfect partner, Evan. The happy home. They were even talking about turning the extra bedroom into a nursery. But things start to splinter. Evan begins missing time, not knowing where he was or how he got there. Terrors in the night rip them both from sleep, and Evan's suddenly violent outbursts cost him his job and his reputation. And voices in his head turn from whispers to screams, commanding him to act. To turn on Ben. How far will Ben go to save his partner's life? How far is too far? Should he have just... run away?