Guilder and Richards race to mobilize a search party when a viral gets loose outside Project NOAH; Amy creates friction with Brad when she volunteers to help in an unexpected way.

Cast: McKinley Belcher III, Tyler Britton, Brianna Brown, Caroline Chikezie, Emmanuelle Chriqui, Henry Ian Cusick, Mark-Paul Gosselaar, Brianne Howey, Francine Locke, Jamie McShane, Kevin Petruski Jr., Vincent Piazza, Jessica Roth, Saniyya Sidney