num_pages: 104
description: Elizabeth faces a crisis of conscience when Jessica reveals the secret language their father had taught them--and the twins had promised to keep secret--and the class plans to use it against an unpopular teacher.
language: Spanish; Castilian
title: El Gran Secreto
titlecomplete: El Gran Secreto (Las Gemelas de Sweet Valley, #12)
genres: Middle Grade, Young Adult, Childrens, School, Chapter Books, Own, Fiction, Juvenile, Contemporary, Realistic Fiction
ratings_count: 851
series: Sweet Valley Twins
publisher: Molino