Guest Stars Mary Lynn Rajskub as Chloe O'Brian D.B. Woodside as Wayne Palmer Zachary Quinto as Adam Kaufman Jesse Borrego as Gael Ortega Joaquim de Almeida as Ramon Salazar Vincent Laresca as Hector Salazar Vanessa Ferlito as Claudia Hernandez Christina Chang as Dr. Sunny Macer Wendy Crewson as Anne Packard Riley Smith as Kyle Singer Agnes Bruckner as Linda Andrea Thompson as Nicole Duncan Lucinda Jenney as Helen Singer Carlos Gómez as Luis Annicon David Labiosa as Gomez Ted Marcoux as Sam Singer Co Starring Keith MacKechnie as Virologist Ty Upshaw as Jeff Benson Michael Canaan as Mall Security Guard