After their recent war with rogue vampires, Cat thinks a little rest and relaxation are in their future. But she's plagued by dreams of a Master vampire who claims to be from her past. As the dreams intensify and the shadowy figure in them proves to be more than a figment of her subconscious, she realizes there are parts of her past that have been hidden. To unlock these memories and deal with a growing danger to herself and Bones, Cat may have to venture all the way into the grave. But finding out the truth could rock what she knows about herself - and her relationship with Bones.