All 6 books in order
Book 1The fourth floor twins and the fish snitch mystery2 editions1985Owned
Book 2The fourth floor twins and the fortune cookie chase2 editions1985Owned- Book 3The fourth floor twins and the disappearing parrot trick1 edition1987Owned
Book 4The fourth floor twins and the silver ghost express2 editions1986Owned
Book 5The fourth floor twins and the skyscraper parade2 editions1987Owned
Book 6The fourth floor twins and the sand castle contest2 editions1988Owned