Hannah Griffin was a girl when tragedy struck. She still remembers the flames reflected against the newly fallen snow and the bodies the police dug up-one of them her mother's. The killer was never found . . . Twenty years later Hannah is a talented CSI investigating a case of child abuse when the past comes hurtling back. A killer with unfinished business is on the hunt. And an anonymous message turns Hannah's blood cold: Your Mom called . . . Contains mature themes.