Les 6 tomes dans l'ordre
Tome 1The fourth floor twins and the fish snitch mystery2 éditions1985Possédé
Tome 2The fourth floor twins and the fortune cookie chase2 éditions1985Possédé- Tome 3The fourth floor twins and the disappearing parrot trick1 édition1987Possédé
Tome 4The fourth floor twins and the silver ghost express2 éditions1986Possédé
Tome 5The fourth floor twins and the skyscraper parade2 éditions1987Possédé
Tome 6The fourth floor twins and the sand castle contest2 éditions1988Possédé