Most serial killers have some early history of trauma or neglect; some, but not all, also engage in early delinquent behavior. A well-known concept, the “Macdonald triad,” posits that repeated ...

Chase was categorized as a disorganized serial killer, doing little to nothing to cover up his ... Chase exhibited signs of the Macdonald Triad (animal torture, arson, and bedwetting past age 5), acts ...

Most serial killers have some early history of trauma or neglect; some, but not all, also engage in early delinquent behavior. A well-known concept, the “Macdonald triad,” posits that repeated ...