In this episode, the fake DVD factory making £100,000 a week - we're out with the enforcement agencies who'll stop at nothing to halt their illegal activity. Could your child be playing with dangerous fake toys? We put cheap Chinese counterfeits, from cuddly animals to babydolls, to the test. Plus, the art forger who made tens of thousands faking the paintings of famous fine artists. And the story of the NHS dentist who treated hundreds of patients after faking her qualifications - we find out how the authorities brought her career of lies to an abrupt end.