This factual series sees the return of our defenders - enforcement officers who protect us from the crooks and the cheats who exploit our trust, take our money and threaten our safety. An 80-year-old woman is bombarded with scam mail and tricked into handing over an estimated £50,000. Her daughter is so outraged that she starts a campaign to ensure no-one else gets caught by scams like this. A young family attempts to cut their energy bills by up to £850 a year by having solar panels fitted. But the company they use is being run by a crooked businessman, and they never get the savings they've been promised.