The Long-Forgotten Winter King by Annette Marie

Everyone is keeping secrets.

Zak won’t reveal what really happened between us ten years ago. Ríkr’s been hiding so much I scarcely recognize him anymore. But the biggest secret belongs to my parents, and it’s the one I’m most desperate to unravel.
Finding out who they really were, and who I am, means solving their eighteen-year-old murders. For reasons unknown, Zak decides to join me—and that makes me nervous, especially when the trail leads us into the most dangerous fae territory in the lower mainland.
The questions keep piling up, but as I realize too late, my parents’ killer is no mystery. He’s been lying in wait all along.
But not for me.
I’ve led Zak and Ríkr into a hell with no escape, and I need more than answers now. I need power—because without it, none of us will make it out alive.