where they raped their first victim, and later in the attic of Boyd Fowler. Famous author and motivational speaker Jordan Chase is revealed to be the driving force of the circle, which consists of him and his childhood friends. All five men appear in a photo, taken by their first rape victim, Emily Birch. As members of the circle begin to disappear, Debra deduces that their latest victim escaped and is exacting her vengeance, with the possible help of a man who loves her. While Debra eventually arrives to the camp, she finds the vigilante couple (in reality, Dexter and Lumen, hidden behind opaque plastic sheeting and therefore, unseen to her), she spares them and advises them to disappear before the police arrive. Boyd Fowler (Shawn Hatosy) works in roadkill pick-up. Dexter first targets him as he spots blood in of the van he used to move out of his and Rita's home. Fowler serves as the circle's "finisher", i.e. the one responsible for finally killing and dumping their victims. His M.O. is to electrocute them, putting their bodies in an oil drum filled with formaldehyde, and dumping the drums in a Florida marsh. Since Boyd tranquilized Dexter in his initial attempt to kill him, Dexter kills Boyd in his home, only to realize he had been watched by the circle's last victim, Lumen, whom Boyd had yet to finish off. Boyd kept locks of hair as trophies of his victims. However, as he only took them once he killed the women, there are only 12 of these. This, plus Cole having thirteen DVDs, leads Debra to conclude that a victim of the circle escaped, and is killing the members. Dan Mendell (Sean O'Bryan) is a dentist (and called "Dan the Dentist" by Dexter, Lumen, and Debra), and the first of circle to be tracked down by Lumen after Boyd's death. She attempts to kill him by shooting him, but only manages to wound him. Not able to handle the situation herself, she calls Dexter, who initially does not believe that Mendell is in fact one of her abusers, due to the fact she only recognized his smell. However, Dexter is proven wrong when Mendell manages to phone his friends, warning them that Lumen is alive. Dexter responds by snapping Mendell's neck. He was a married man, able to keep his wife in the dark of his activities by claiming