The team crack down on the company that designed a cot which almost cost a baby its life. They hunt down traders selling illegal skin lightening creams. And they catch out a water company polluting one of the UK's best-known rivers with raw sewage.

The team investigate a huge gas escape in a residential street as homes are evacuated and a gas worker is trapped below ground. And they're on the trail of fly-tippers blighting one of the most picturesque parts of the UK.