“Now the rest of the acts of King Hezekiah, and his good deeds, are written in the vision of the prophet Isaiah son of Amoz in the Book of the Kings of Judah and Israel. King Hezekiah slept with his ancestors. They buried him in the ascent of the tombs of the descendents of King David. All Judah and the inhabitants of Jerusalem did him honor at his death. His son Manasseh succeeded him.”
Once again, this is almost word for word from 2 Kings, chapter 20. As per usual, if you want to know more, look up the lost “Book of the Annals of the Kings of Judah and Israel.” However, there is a mention of the vision of the prophet Isaiah, which maybe the Book of Isaiah or some other lost work. He then died and was buried in the tomb of the sons of David, a high honor. His son King Manasseh took over after his death.
Eugene Finnegan Bible Project 