The team travel to Las Vegas to investigate the abduction and subsequent murder of 5-year old Ethan Hayes whose dead body was found in the desert but in a visible location, newly clothed and seemingly starved during his abduction phase but somehow with nutrients in his body without visible evidence of an I.V. marking on his body. Another adolescent, Michael Bridges, has been abducted but assumed not yet dead. The tie between the two abductions is that the killer has contacted both sets of parents telling them they are the cause of their child's abduction. This case is especially difficult for Reid whose hometown is Las Vegas and whose mother has been institutionalized there for the better part of her adult life. In addition, he has been having nightmares of late of himself and the team chasing the killer of a six-year old child. However, this child is seemingly someone he may have known from his own childhood.