"Lily wasn't the first. She won't be the last. Like the fall leaves that turn orange and red, 23 pretty little girls harvested dead."
The killer wants to play a game. When the man who calls himself, The Professor, strikes a little too close to home, Luke is hot on his trail - the killer taunting him at every turn. Meanwhile, Luke's investigative team - private eyes Riley Sullivan and Cooper Deagnan - work to unravel long-forgotten cold cases, uncover decades-old witnesses who still have stories to tell, and unearth sick twisted trophies taken from the victims.
Luke, Riley, and Cooper must stop the diabolical serial killer before he goes underground until the next harvest. Just how far will Luke go to bring his sister's killer to justice?