Catherine is still tracking Grace , who vanished while working at a private club.
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 CSI: Vegas Season 2 - Episode 5
An upscale fundraiser for a university science department turns deadly when all guests suddenly fall ill. Catherine is still tracking Grace , who vanished