[Contains explicit content] Melissa Lopez is determined to find out who or what was responsible for the death of Anna Winslow — and in this episode, uncovers a link between Anna and a secretive psychiatric hospital. However, staff at the facility appear unwilling to disclose anything of Anna's time with them. Going undercover is the only way she can learn more, but will the locked doors of the hospital reveal their secrets? Soon Melissa has good reason to start questioning everything around her, perhaps even her own judgement. Was Anna delusional? Could she hear after all? A voice from the past would suggest so.