After the burial of Hektor (see the previous post) the Iliad ends, but this doesnt mean the end of the epic. The epic actually consisted of 10 books, most of which are lost. We do have summaries of these works.
In the book coming after the Iliad, Paris takes revenge on Achilles, killing him by shooting a poisonous arrow into his heel.
The brave Ajax then grapped his body and carried it back to the Greek camp for burial next to his friend Patroklos.
"The Great World History Book"