There are 2 series with the name: Lorien Legacies
Lorien Legacies Books in Order
Books by Pittacus Lore1. I Am Number Four (2010)
2. The Power of Six (2011)
3. The Rise of Nine (2012)
4. The Fall of Five (2013)
5. The Revenge of Seven (2014)
6. The Fate of Ten (2015)
7. United as One (2016)
Lorien Legacies Reborn Books in Order
Books by Pittacus Lore1. Generation One (2017)
2. Fugitive Six (2018)
3. Return to Zero (2019)