After receiving multiple anonymous threats, Emma installs a CCTV camera in the front of her home, determined to find out who is sending the sinister notes, while at work the walls are closing in as her colleague Ian becomes determined to prove that she lied in court. While Beth is taken further into Andi's web, Emma finally snaps under the pressure, and rushes round to Derek and Barbara's home to find out once and for all what secret their tree holds. What really happened to their missing son Marcus? But Emma's impetuous actions bring more than she had bargained for... 

Emma is pulled in different directions to keep her family together - but who is there left to trust? Suspended from her job, uncertain if she can believe anything John says, unable to lean on her own father, and wondering what exactly Barbara knows about Derek's death, Emma must fall back on her own initiative. Can she find out what happened in her house that led to murder? And can Nick and his CCTV really be what hold the answers? With no other option left, Emma takes control at last and pursues the ultimate truth - but finds her own life in danger.