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 Christina Chang as Dr. Sunny Macer Vanessa Ferlito as Claudia Hernandez Wendy Crewson as Anne Packard Riley Smith as Kyle Singer Andrea Thompson as Nicole Duncan Agnes Bruckner as Linda 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