Chapter 5 examines Leon, a 16-year-old who murdered two girls, Cherise (age 12) and Lucy (age 13), after they rejected his sexual proposition in their apartment building. Leon stabbed both girls, raped their bodies, and stomped on them. He was convicted of a capital offense and faced the death penalty. Perry evaluated Leon during the sentencing phase, seeking to understand how such extreme violence could emerge from an apparently stable family background.

Leon’s case presented a puzzle: His parents, Maria and Alan (both pseudonyms), were hardworking legal immigrants with no criminal history, and his older brother Frank was a successful, law-abiding citizen who turned Leon in to the police. If genetics primarily determined Leon’s sociopathy, then Frank should have shown similar violent tendencies since siblings share at least 50% of their genes.

During prison interviews, Leon displayed complete emotional emptiness and lack of remorse. When asked what he would do differently, he said he would have thrown away the bloody boots that led to his conviction. His psychological testing revealed patterns common in traumatized children: While his verbal IQ was low to normal, his performance scores were high, particularly in reading social situations. This split, found in about 5% of the general population but in over 35% in prisons, indicates underdeveloped brain regions that normally control stress responses and impulses.

The key to understanding Leon emerged through Perry’s family interviews. When Frank was born, Alan and Maria lived in their rural hometown surrounded by extended family. Despite Maria’s mild intellectual disabilities, grandmothers, aunts, and cousins helped with childcare, providing guidance and support. Frank received consistent, loving attention that enabled healthy attachment and appropriate responses to parental discipline.

When Leon was born, the family relocated to an urban area for Alan’s factory job, leaving behind their entire support network. Isolated and overwhelmed, Maria developed a routine that unintentionally had devastating consequences for Leon’s development: From the time he was four weeks old, she left Leon alone in the apartment all day while taking Frank on educational outings to parks and museums. Leon initially cried, but quickly learned that no one would come, so he stopped and lay alone in his crib for most of each day.

This systematic neglect during Leon’s critical early months damaged his developing brain. The isolation deprived him of stimuli necessary for healthy development in areas responsible for stress regulation and social bonding. Unlike Frank, who learned to associate human contact with comfort, Leon learned he could only rely on himself. The inconsistent care was particularly damaging because intermittent attention creates chronic stress, keeping stress response systems on high alert.

Leon never developed normal associations between human contact and relief from distress. He became unable to experience pleasure from pleasing others or pain from their rejection. His early neglect occurred during the most crucial period for developing empathy and the ability to form healthy relationships.

Perry explains how small early experiences can cascade into dramatically different outcomes through what he calls the “butterfly effect” or the “snowball effect.” Leon’s slightly difficult temperament might have been manageable with adequate support, but it overwhelmed his isolated mother’s limited resources. This created cascading negative consequences as Leon grew older: Leon’s neediness made him demanding and aggressive, which further alienated his parents and created a “vicious cycle” pushing him toward sociopathy.

Early intervention programs actually worsened Leon’s condition by grouping him with other troubled children; research shows that this escalates rather than improves antisocial behavior. Leon learned to mimic appropriate behavior for manipulation while his underdeveloped emotional systems prevented genuine connections.

Perry testified about Leon’s developmental trauma as a mitigating factor while acknowledging Leon remained dangerous and legally responsible. The chapter concludes with Cherise’s mother desperately asking Perry why Leon killed her daughter. Perry could only explain that Leon’s heart was “cold” and something was “broken” (136). Overall, the chapter uses Leon’s case to illustrate how early neglect can destroy empathy and human connection, demonstrating the extraordinary vulnerability of young children to cascading consequences of early experiences.

Perry begins this chapter by reflecting on previous cases, particularly wondering whether proper treatment could prevent children like Leon from becoming dangerous. These reflections led Perry and his colleagues to develop a “neurosequential approach” to therapeutic services for maltreated and traumatized children. This method recognizes that brain development occurs sequentially, and that treatment must address damaged regions in the order they were affected by trauma or neglect.

Perry first applied this approach with Justin, a six-year-old found in a pediatric intensive care unit in 1995. Justin exhibited extreme behavioral problems. He was confined in a cage-like crib and threw feces and food at the hospital staff. His history revealed significant neglect: Abandoned by his teenaged mother, he lived with his loving grandmother until her death when he was 11 months old. The grandmother’s boyfriend, Arthur, then raised Justin as he did his dogs, keeping the child in an actual dog cage for five years with minimal human interaction.

Medical professionals had diagnosed Justin with static encephalopathy, believing he had untreatable brain damage. Brain scans showed severe abnormalities resembling advanced Alzheimer’s disease. However, no one had investigated his living conditions, assuming his condition resulted from genetic defects.

During Perry’s first meeting with Justin, he approached Justin carefully, establishing safety through slow movements, removing unfamiliar garments (like his white coat and his tie), and using food to build trust. With Perry’s guidance, the hospital later provided Justin with intensive therapy in a controlled environment. Justin’s progress proved remarkable: Within days he stopped problematic behaviors, within weeks he was walking, and his brain eagerly absorbed new experiences. After being discharged to foster care, he continued to develop rapidly, eventually starting kindergarten and sending Perry a thank-you note.

Perry recounts the case of another boy, Connor, a 14-year-old from an educated family. Connor had received numerous psychiatric diagnoses including autism and schizophrenia. His neglect was more subtle: During the first 18 months of his life, a nanny left him alone all day while working another job, returning only to provide basic physical care. Connor’s mother unknowingly interpreted Connor’s emotional withdrawal as a sign that he was content.

Perry developed a systematic treatment for Connor that addressed brain regions in developmental order, providing stimulation appropriate for the age at which trauma occurred rather than the child’s current age. For Connor, treatment progressed through three phases. First, massage therapy addressed his touch aversion. Human touch, the authors explain, initially causes stress in newborns but becomes associated with safety through loving contact. Without this foundation, touch becomes unpleasant. Therapy progressed gradually from self-massage to maternal participation to professional treatment. Second, music and movement classes targeted rhythm and bodily regulation. The brainstem controls fundamental rhythms including heartbeat and hormone cycles. Early neglect disrupts these systems, affecting sleep, stress responses, and motor control. Connor initially couldn’t maintain basic beats but gradually improved. Third, social skills development began at an elementary level appropriate to Connor’s emotional rather than chronological age. Perry used parallel play therapy, allowing Connor to control the pace of interaction, then progressed to explicit social coaching covering fundamentals like eye contact and conversational rhythm.

The authors note that several factors determine whether neglected children become victims like Connor or perpetrators like Leon. Genetic factors include temperament and intelligence. Children with better-regulated stress responses are “easier” babies, which reduces parental frustration. Intelligence also allows for faster information processing, helping children form positive associations with fewer repetitions and benefit more from limited positive experiences. The timing of trauma significantly affects outcomes, as well—earlier trauma generally causes more severe, harder-to-treat damage. Justin’s year of loving care before he experienced neglect provided a foundation that aided in his recovery, while Connor and Leon experienced neglect from birth. Lastly, the child’s social environment proves crucial. Extended family support can compensate for parental limitations, while supportive adults outside the family provide hope and alternative relationship models.

Perry explains that treatment must begin by creating safety and predictability, as trauma involves the loss of control. Coercive tactics are counterproductive; children must feel that they are in control. Connor’s progress demonstrated the approach’s effectiveness: He eventually expressed love spontaneously, developed better social skills, and later found employment as a computer programmer. Unlike Leon, Connor never developed malicious behaviors, and his difficulties stemmed from frustration rather than revenge.

Perry concludes that with earlier intervention, Leon’s trajectory could have been altered. The neurosequential approach, he says, offers hope by providing developmentally appropriate stimulation in safe environments, demonstrating that even severely neglected children can make remarkable progress when treatment addresses their specific developmental needs.