Every week Supernanny Jo Frost promises to transform the lives of a different family and put a stop to the unruly and bad behaviour of children who are driving their parents insane.

Having tackled tantruming toddlers in Series One, Jo returns with her magic for Series Two - new programmes which aim to put modern families, parenting and childcare under the microscope.

This time she takes on a range of problem children from terror tweens to troublesome teenagers, from destructive daughters to children who won't eat, sleep or go to school.

In her frank and upfront style, Jo forces each family to confront the real issues behind the bad behaviour, then with her recipe of strict discipline and tried and tested techniques she will set about teaching the parents how to turn their kids around - but will she succeed in just three weeks to meet these tough new challenges?