Season 2, Episode 18 Going Viral

First Aired: March 27, 2012

Part 1 of 2. An act of terrorism unleashes an unknown virus that kills scores of people throughout the city. The Center for Disease Control takes over the investigation to determine what caused the outbreak and uncover who was responsible.

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Guest Cast

Nick Stahl Marcel Trevino
Dean Norris Special Agent Brendan Johnson
Luke Perry CDC Off. Charlie Stafford
Nathalie Kelley Dani Alvarez