When Michael and Vidya move into their new flat in Coulthard Street, a leak dripping through the ceiling sets off a chain of events that leads them to a shocking discovery.

Struggling to adapt to retirement, Len finds himself drawn back to his on-going investigation.

Len realizes hidden truths behind the fragile lies told by the residents of Number 8.

One suspect makes a shocking confession and another is arrested, but Len continues to strive to discover who really murdered Melissa Young.