From Darkness 1x4 - Episode 4

Claire's confession about their lost child sends John reeling,and both crumble in the aftermath of a disastrous attempt tonail the prime suspect. When John is suspended from duty,Claire with her direct connection to one of the killers mustput aside her guilt and fight to prevent another murder. Underintense media pressure, DSI Lola Keir takes the reins of theinvestigation and orders the team to take her back to squareone, with a full list of potential suspects, now includingClaire's tormentor, Lucy Maxley, a former student whosurvived an attack by the original culprit, and whose criesfor help went unheard at the time. Now, Claire must exploitLucy's obsession with her in order to try to stop the killing,but at what personal cost? Claire's betrayal enrages Lucy,forcing Claire to lead a desperate operation to rescue her ownfractured family. She emerges tougher, newly determined to endthe violence by finally snaring the 1998 killer. But as Clairemakes a daring breakthrough, Lucy closes in on a new andunexpected target. John risks professional annihilation to getto Lucy before she kills again, his feelings for Claireintensifying even as events keep them apart. As each races tocatch a killer, they uncover the dark secrets at the heart ofthe murderers' brutality. But they may be too late to preventanother tragedy. For Claire, the final confrontation will testher emotions beyond anything she's endured so far. As shefinally confronts her own role in the crimes, will she finallyput an end to the darkness or has the true horror only justbegun?