The Lorien Legacies series is a collection of books written by a group of writers using the pseudonym Pittacus Lore. It is a young adult science fiction series published by HarperCollins.
The Lorien Legacies series consists of a proposed seven books. Each book is centered on a group of teenage aliens, known as Lorics from the planet Lorien, residing on Earth. The teenagers all have special abilities, known as "Legacies," and are protected by a charm that only enables them to be killed in numerical order while apart. The first book is "I Am Number Four," a book that had a thriller film adaption produced by Michael Bay in 2011. "The Power of Six" is the second book, and "The Rise of Nine" is the third. "The Fall of Five," "The Revenge of Seven" and "The Fate of Ten" are the fourth, fifth and sixth in the series.