When Neil and Davina needed an extension to their two-bedroom semi in West Sussex, and their architect recommended a local builder, they thought he would have no excuse not to show up. However, the contractor frequently failed to show. Seven months later, with £25,000 invested, the extension is still half-finished and building control found 15 faults with the work.

Melinda is more than a little upset by the situation, and everywhere she turns she uncovers more wonky workmanship. She vows to get things shipshape, and sort out the shoddy shambles.

Meanwhile, Dom starts sleuthing around, discovering that the builder has left quite a trail of destruction around the neighbourhood. When he finds out that the builder has left town, Dom pulls out all the stops to track him down.