Parenting expert Jo Frost explores the psychology of child murderers, starting with Daniel Bartlam, who at age 14 killed his mother with a hammer.

Parenting expert Jo Frost examines the case of a child obsessed with serial killers, who stabbed two strangers to death in Colchester in 2014.

Jo Frost profiles Sharon Carr, who became the youngest female murderer to be sentenced in the UK after stabbing a woman to death at the age of 12.

Jo Frost looks at what motivated a 14-year-old boy to murder his schoolmate after luring him to his house with a faked letter from a teacher.