Two mass violence incidents at Brown University and during a Hanukkah celebration overseas leave investigators searching for answers as key details remain unclear. The jury begins deliberations in the Brian Walshe murder trial. We also revisit the homicide of 18-year-old Anna Kepner aboard a cruise ship, along with another cruise ship death that raises serious questions about force and accountability at sea. Forensic expert Joseph Scott Morgan joins us to break down the evidence, including a Crime Lab deep dive into fingerprints and how they continue to solve crimes. Tune in for all the details.