With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Lumen Pierce is a character on Showtime.
text_B: Lumen Ann Pierce is a fictional character portrayed by Julia Stiles in the Showtime television series Dexter , season 5 .. Dexter. Dexter ( TV series ). Julia Stiles. Julia Stiles. fictional character. fictional character. Showtime. Showtime ( TV network ). season 5. Dexter ( season 5 ). Lumen is introduced in the third episode -LRB- `` Practically Perfect '' -RRB- as a survivor of rapist-serial killer Boyd Fowler .. Practically Perfect. Practically Perfect. third episode. Dexter ( season 5 ). Boyd Fowler. List of Dexter characters#Minor characters in season 5. She remains for the rest of the season , and leaves following the season 5 finale , `` The Big One '' .. The Big One. The Big One ( Dexter ). season 5. Dexter ( season 5 ). In season 5 , episode 5 , `` First Blood '' , Lumen is revealed to have been beaten and gang raped by a group of men , including Boyd Fowler .. season 5. Dexter ( season 5 ). Boyd Fowler. List of Dexter characters#Minor characters in season 5. She witnesses Dexter Morgan kill Fowler , and thus becomes a key player in Dexter 's life .. Dexter. Dexter ( TV series ). Dexter Morgan. Dexter Morgan. Dexter rescues her , but initially thinks he has no choice but to kill her in order to eliminate a witness .. Dexter. Dexter ( TV series ). He eventually decides to spare her life , however .. To earn Lumen 's trust , Dexter shows her the fate of Boyd 's dead victims , tells her he saved her from the same fate , and confides his wife was murdered by someone like Boyd .. Dexter. Dexter ( TV series ). Lumen asks Dexter to help her seek revenge against her abusers , but he initially refuses .. Dexter. Dexter ( TV series ). However , after Lumen continues on her own and targets the wrong suspect , Dexter teaches her the importance of knowing a person is guilty before killing him .. Dexter. Dexter ( TV series ). He entreats her to leave Miami ; she agrees at first , but decides to stay after a pat-down at the airport brings back memories of her abuse .. Miami. Miami. She goes out on her own and shoots one of her attackers , but panics not knowing what to do with his body ; she calls Dexter , who reluctantly helps her cover up the murder .. Dexter. Dexter ( TV series ). That night , she tells him that killing the man brought her a sense of peace that she knows will not last ; she believes she will have to kill all of her attackers to get over her abuse for good .. Dexter realizes that she harbors a `` Dark Passenger '' much like his and agrees to help , in part to find his own closure following Rita 's murder .. Dexter. Dexter ( TV series ). Rita. Rita Bennett. The two then systematically hunt down and kill Lumen 's abusers , and in the process become lovers .. Lumen leaves Dexter in the season finale , however , after realizing she no longer feels the need to kill .. Dexter. Dexter ( TV series ). Lumen exited the show following the events of `` The Big One '' .. The Big One. The Big One ( Dexter )
related.