'Is household mould to blame for my son's evil turn?'

Eight-year-old William Hewlett has been diagnosed with probable paediatric acute-onset neuropsychiatric syndrome (PANS) - a rare brain disorder, believed by his parents to have been brought on by the mould in their family home.

The syndrome caused William to change overnight - turning him from an angelic child into ‘something out of The Exorcist’. And months on, he continues to suffer from extreme aggression, violence, and worrying hallucinations.

His parents, Johanne and Jez join us alongside PANDAS specialist Dr Tim Ubhi as the family raise awareness about the condition.