The FBI seizes the science department crime scene and the lab's related work on the energy weapon.

Grad student Luther Canal fakes his own symptoms to hide his involvement. He used the weapon to stop a lawyer from selling the technology to a defense contractor. 🕵️ Catherine's Investigation

In Season 2, Episode 5 of , titled " In Harm’s Way ," the team investigates a mysterious mass casualty event at a university fundraiser while Catherine Willows continues her personal quest to find her missing friend . 🧪 The Case: Mass Illness

Investigator Beau Finado identifies the cause as a directed-energy weapon .

She recruits Grace's former roommate, Monica , who helps by stealing DNA evidence from a high-stakes poker game.

Catherine is still tracking Grace , who vanished while working at a private club.

The episode touches on themes of loss and connection, mirroring real-life experiences of the show's creators.

Notable guest appearances include Christian Navarro and Sara Amini . CSI: Vegas Season 2 Episode 5 Review: In Harm's Way