Child of Rage: Psychopath, 6, admits urge to kill sibling
Beth Thomas' appearance on 1992 documentary Child of Rage featured shocking footage of her telling her psychiatrist she wanted to kill her parents and brother in the dead of night. She suffered from a rare psychological condition, RDA, that stemmed from extreme childhood neglect and sexual abuse - but she beat the odds to overcome her horrific early life to help others like her.
In the footage, Beth - then aged 6 - explains that parents Tim and Julie lock her in her room at night to stop her from stabbing them to death.
She also admits to sexually abusing her younger brother, Jonathan, torturing the family dog and killing a nest of baby birds.
Jonathan was hospitalised after Beth repeatedly smashed his head in to a concrete floor in a bid to kill him. The siblings were adopted from a situation of severe neglect, and she was later diagnosed with 'reactive attachment disorder' (RAD), a rare but serious condition where young children fail to make healthy attachments with parents or caregivers due to extreme abuse.
RAD is common diagnosis of children who have been adopted, with their new parents struggling to cope with violent outbursts aimed at them and family pets, destructive behaviour and self-harm, all triggered from their traumatic early starts.