Those Who Kill (2014): Season 1, Episode 9

1 - 9: Untethered

The team investigates the connection the killer has with his drug dealing, as he targets his next couple. Meanwhile, Thomas becomes paranoid trying to think like him. At her mother's funeral reception, Catherine is introduced to a boy being mentored by Howard. Suspicious, she is torn between investigating him and the murder case. This causes her to abandon Molbeck on surveillance and he is shot by the killer.