The Never List by Zan Koethi
A man is up for parole and the women he imprisoned in his basement are being contacted by the FBI in hopes that they will come to the hearing and help keep him incarcerated. Sarah, one of the women who become agoraphobic as a result of her psychological trauma is trying to overcome her fears and find out what her former captor is up to. It seems that he’s still controlling people from prison and that his release may actually happen. She will do anything to prevent that and feels the best way to do that is to finally find the body of the fourth woman who was in the basement, her best friend Jennifer, the one who didn’t live.