Special Guest Stars Leonard Nimoy voices Dr. William Bell Guest Stars Anna Torv as Dr. William Bell Ryan McDonald as Brandon Fayette Ulrich Thomsen voices Man in Zeppelin Co Starring Ada Breker as Young Olivia Dunham Chris Bradford as Olivia's Stepfather John Emmet Tracy as ER Doctor Lee Majdoub as Paramedic Marina Allen as Nurse #1 Uncredited Michael Cerveris as September