Episode 4

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...