Lumen Ann Pierce is a main character in Season Five of DEXTER. She is a protagonist who is heading down the correct path by using her Dark Passenger, and the assistance of Dexter Morgan, to hunt down all the men who raped and tortured her as well as other women, whom they also murdered. Dexter officially considered her his partner prior to the end of the season. Dexter witnessed first hand the birth and death of her dark passenger, which vanished once all members of the Group finally met their end.