Spokane County Medical Examiner Riah Preston has a job to do and a secret to keep. Riah is a vampire and she's on a mission to discover a cure for the very thing that has kept her a prisoner of darkness for over five hundred years. With the help of Moses Lake Coroner Ivy Hernandez and genetic scientist Adriana James, they are on the verge of a breakthrough. When victims of a rogue vampire begin to show up along the I-90 corridor, things get complicated. The appearance of vampire hunter Colin Jamison complicates the situation even further. Will they be strong enough to stop this vampire killer cutting a wide path of death and destruction? Or will the secrets Riah holds in her heart destroy them all?