Week 4 of CA v. Simpson, starts with a jury field trip. The jury visits Mezzaluna, the crime scene and O.J. Simpson's Rockingham home. Then, it's a deep dive into forensic evidence. Officer Robert Riske, who was first on the crime scene, takes the stand. He is followed by Sgt. David Rossi and a detective who also responded to the scene. Then, to wrap up Week 4, the jury is introduced to the lead investigator, Tom Lange. Court TV's new series "OJ25." will explore and examine the main events of the trial - coinciding with the same week 25 years earlier. And in coordination with the series, CourtTV.com will release the trial in its entirety- one week at a time.