Vivian Arliss is the drug addict mother of Calvin Arliss, whom she temporarily left in the custody of Olivia Benson.
History
Like Benson, her birth was the result of rape. She first appeared caring for her dying mother, Joan Arliss, who was raped 40 years ago. When Olivia told her the reason for her visit, Vivian did the math, then realized why her mother hated her all of her life. Olivia suspected Vivian was her half-sister, but a DNA test proved her wrong. She was then a suspect in her real father's murder. Later, when Calvin's father killed her lover, she blamed Olivia and gave custody rights of Calvin to his paternal grandparents, leaving Olivia and Calvin heartbroken.