Is OJ Innocent? The Missing Evidence

A team of investigators re-examine the O.J. Simpson case. They inspect a knife that could be the murder weapon and sit down with Fred Goldman and Tanya Brown to get their personal insights into what they believe happened that day.

After examining evidence both old and new, the team questions O.J.'s role in the murder. Dr. Henry Lee, a forensics expert from the original investigation, gives his insight.

The team takes a closer look at private investigator Bill Dear's person of interest in the murders of Nicole Brown Simpson and Ronald Goldman -- and his checkered past.

LAPD forensic psychologist Dr. Kris Mohandie and Rhode Island police sergeant Derrick Levasseur raise questions about the validity of the potential person of interest's alibi from the night of the murders.

The team asks Kato Kaelin and others whether O.J. could've acted alone in the murders, and a new potential eyewitness comes forward with a shocking revelation.

A possible eyewitness takes a polygraph test, the DNA results from a potential murder weapon are in and the team reveals their final conclusions about what they believe really happened that night.