TV highlights: Emma Roberts makes her 'American Horror Story: Freak Show' debut

A reconfiguration of the tribes leaves one castaway left out while another tribe is forced to negotiate for its next meal after mismanaging the food supply on "Survivor" (CBS at 8 p.m.). RETURNING SHOW: "The 100" (CW at 9) opens its second season with Clarke frantically trying to make sense of her surroundings just as an enemy reappears.