Follows two families whose lives are being torn apart by violence in the home inflicted upon them by their children. Marcel believes that his Asperger's syndrome is behind the outbursts that have seen him throttle both his parents.

Tracey has suffered violence at the hands of her eight-year-old son Robert since he was three. Their house house is riddled with holes that he has punched in the wall and the police have had to use riot shields and tasers to control Robert.

The last episode in the series looks at the families of single parents that are struggling to cope on their own. Single mum of three Pauline has an 11-year-old boy and two twin 8-year-old girls, and surprisingly it is one of the twins that is the cause of the violence. The programme also follows the moving story of mum Shimona, whose 8 year-old son uses violence as an excuse to command her attention.

In South Wales, Mandy tackles one of the most troubling cases she has ever seen; nine-year old Jack is at risk of being locked up because of how badly he terrorises his single-dad Damien.

Single mum Hazel from Nottingham is at the end of her tether; eight-year-old Jordan rules the roost, terrorising his brothers and sisters, punching his mum and trashing the furniture on a daily basis; Hazel badly needs help, before someone ends up in hospital or worse.

Mandy tackles a complex case in which a family's unresolved issues have led to a 13-year-old being excluded from mainstream education.