The unsolved murder of 6-year-old beauty pageant queen JonBenét Ramsey has gripped the nation for the last 20 years.
 
In the video above, Dr. Phil reviews the DNA evidence that was found and tested. What did it reveal? And on Monday, JonBenet’s older brother, Burke, who was 9 at the time of his sister’s death, speaks out exclusively to Dr. Phil. Hear about his relationship with JonBenet and who he thinks may have killed his sister. Check here to see where you can watch.