The Iliad, written sometime in the 8th century BCE, is a tragic epic poem of more than 15,000 lines organised by scholars in Alexandria into 24 books. Book 10 is thought a possible later addition on stylistic grounds, but it could also be a deliberate attempt at an intermission in the narrative. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.