The case of JonBenet Ramsey's murder has captivated the nation for over two decades, and the question "Who killed JonBenet Ramsey?" remains unanswered. Despite numerous investigations, theories, and advancements in forensic science, the true identity of her killer is still a mystery. JonBenet, a six-year-old child beauty queen, was found dead in her family's Boulder, Colorado home on December 26, 1996, after being reported missing the night before. Several theories have been proposed, including the possibility of an intruder or involvement from family members, but none have led to definitive answers. DNA evidence has ruled out key family members, yet new developments, such as advancements in genetic genealogy, keep hope alive for solving the case. The intense media attention and public fascination continue to fuel the ongoing debate over "Who killed JonBenet Ramsey?" leaving the mystery unresolved after more than 25 years.