Guest Stars Geoff Pierson as Arnold McFadden Demore Barnes as Agent Bill Hubert Conrad Coates as Vincent Ames Natassia Malthe as Linda David Richmond-Peck as Detective Kassel Co Starring Megan Leitch as Elaine Robert Parent as Police Officer Jason Bax as CDC Suit Kristian Haas as Mike Brendan Beiser as Steve Chris Casillan as Science Center Worker Peter Grasso as Hazmat in Truck Denise Jones as Teacher Tracy McMahon as Female Uniform Kennedy Montano as Small Child Alan Wong as Karl Nicolas Von Zill as Radjan Vandenkemp Uncredited Michael Cerveris as September