Peter Manfredonia was a 23-year-old college student who turned into a machete-wielding killer, leaving a trail of blood and terror across several states. In just six days he butchered a kind stranger, left another man fighting for his life, murdered a friend, kidnapped a young woman, and sparked a massive multi-state manhunt before finally being caught. This is the disturbing case of Peter Manfredonia — the student who became a monster.