Sororicide in preteen girls. A case report and literature review.

All means of exploring the psychological and environmental antecedents of murder by a child should be used toward preventing lethal outcomes in future. The authors present the case of a ten year old girl who killed her sister with details of the sisters' relationship, the perpetrator's psychological characteristics and the family situation. Sibling-rivalry, family stressors, and the perpetrator's compulsive and narcissistic traits and preoccupation with a violent television fantasy are discussed. A literature review and suggestions for future research are provided.