Twins Edgar and Ellen have a penchant for making mischief in this Nicktoons animated series based on the books by Charles Ogden and illustrations by Rick Carton, which evoke playful comparisons to the creepiness of Edgar Allan Poe. In the show's first season, the trouble-loving 12-year-olds set booby traps in their parents' 13-story mansion; enroll their beloved pet -- named Pet -- in a dog show; and invent a robot that can't stop cleaning.