Emma's discovery of shocking video evidence leads to an unexpected breakthrough in the case, and she has no choice but to turn on one of her own.

With a key suspect exonerated, Emma is unable to shake her suspicion that a serial predator is operating within Wakestead Police Station.

Emma uncovers a potential lead to Sophie's killer as a link to another victim is discovered.

A suspect is brought in for questioning. Emma seeks help from an unlikely ally to bring her one step closer to Sophie's killer.

Things come to a head when the identity of the serial abuser is finally revealed, but Emma uncovers a further clue, forcing a devastating confrontation.