The Mill Creek Killer later attempts to lure a pedestrian into a secluded area, but the woman refuses, causing him to become violent. The Mill Creek Killer attempts to engage in necrophilia with one of his victims. The BAU intends to leave the corpse there so they can wait for the Mill Creek Killer to return and engage in necrophilia with it so they can catch him in the act, but when they apprehend a man who wanders toward the corpse, it is revealed the killer learned of the discovery and sent decoy to trick the authorities. The Mill Creek Killer later dumps Meredith's body in the woods and it is discovered before he could engage in sexual activities with it. He encounters a security guard who inspects the van, but the guard fails to spot the body and he is allowed to go ahead. He is later seen approaching jogger Meredith Dale when she enters a secluded location, killing her and placing her inside his van. It is Ellen's disappearance, along with the Hollow Man's latest murder, that brings in the BAU. He is then seen tending to her corpse before engaging in sexual activities with it off-screen. He then pretends to hear his "daughter" move around in the nearby trees and lures Ellen behind a bush, where he punches her hard and drags her away as she dies. He catches her attention by stating he lost his daughter and stops her from calling her husband for help. The Mill Creek Killer is first seen approaching mother Ellen Carroll when she becomes secluded from her family in a bustling park. They even communicated using personal ads under the aliases "Sunny" and "Holden", references to the novel The Catcher in the Rye. He and the Hollow Man eventually, more or less, began competing with each other in a form of rivalry, as they operated at the same time. What is known about him is that, at some point in his life, he became a necrophiliac (which he became ashamed of) and developed a sexual preference for brunette Caucasian women. Like his polar opposite, the Hollow Man, a lot remains unrevealed about the Mill Creek Killer, not even his real name.