When Emma and John Barnett decide to add a kitchen extension to their house, neighbourly friendships prove not to be quite as harmonious as they seem.

Secrets and tensions become thornier as friendships and marriages become strained.

The row over Emma's extension becomes even more heated as her neighbours stand firm in their opposition to the build.

After multiple anonymous threats, Emma installs a CCTV camera at home, determined to find out who is sending the sinister notes, while the walls are closing in at work as her colleague Ian becomes determined to prove she lied in court.

With friendships and relationships at breaking point, Derek is in hospital fighting for his life. Alan approaches John with life-changing news about Sonia, and as a result John seeks Sonia out to talk to her about where their future might lie.