Well, you know what they say about sequels.
The Moabites take advantage of the chaos caused by Ahab's death and invade. This somehow causes Ahaziah to fall out a window. He asks his advisors to consult with Baalzebub, god of Ekron (a synonym of Beezlebub? who knows). Not that I blame him. God only seems to want to scold and smite these days. Of course, an angel notices and tattles to Elijah. The angel instructs him to go tell Ahaziah's messengers that he's never going to get better and he's going to die in bed. Nyah! The messengers go back with that cheerful information. Ahaziah asks who told them, and they describe Elijah as an hairy man, and girt with a girdle of leather about his loins (v. 8). Ahaziah immediately recognizes Elijah.
In response, Ahaziah sends 51 men to find Elijah, who is sitting on a hilltop. They command him to come with them, and Elijah responds f I be a man of God, then let fire come down from heaven, and consume thee and thy fifty (v. 10. So god sends fire down to consume the 51 men. Ahaziah sends another 51 men who are likewise burnt to death. The third captain has leanred his lesson and throws himself at Elijah's feet and begs him to come down. God likes this guy and tells Elijah to go with him.
Elijah arrives and tells the king exactly what he told his messengers. Then Ahab dies, and because he has no sons, Jehosephat's son Jeroham rules all of Israel.