The Penguins of Doom

In a series of letters to various interested parties, including teachers, the school psychologist, a police lieutenant, and others, triplet Septina Nash reveals the complicated tale of her sister Sexta's disappearance, and how penguins and mathematics are involved.In a series of letters to various interested parties, including teachers, the school psychologist, a police lieutenant, and others, triplet Septina Nash reveals the complicated tale of her sister Sexta's disappearance, and how penguins and mathematics are involved.