Investigator Bill Dear invites police veterans Derrick Levasseur and Kris Mohandie to explore his theory that OJ Simpson's son, Jason, was the actual assailant.

Derrick Levasseur and Kris Mohandie discuss the crime scene evidence with forensic expert Dr Henry Lee, who reveals troubling contradictions in evidence.

Three hand-written diaries support Bill Dear's theory that Jason Simpson is responsible for the murders. Will Levasseur and Mohandie agree?

Investigators Derrick Levasseur and Kris Mohandie take a look at Jason Simpson's alibi for the evening of the murders. Will it raise more questions than it answers?

OJ Simpson said that if he committed the murders, he couldn't have done it alone, so the team investigate. A new potential eyewitness has a shocking revelation.

A possible witness with new information takes a polygraph test. The DNA results from a potential murder weapon are in, and the team give their conclusions.