The Iliad: Novel Summary: Chapters 9-10
Chapter 9: Agamemnon offers a full retreat, this time in earnest, but Diomedes becomes angry and convinces the Greeks to stay. Ajax and Phoenix travel to visit Achilles and beg for his return. Achilles is happy to see them, but he refuses to return to the battle, and becomes angry when they offer bribes of wealth.
Chapter 10: Agamemnon cannot sleep, and so to ease his mind, he sends Diomedes and Odysseus on a spy mission. They break into the Trojan camp, kill a slow-witted spy, and slay many other Trojans as they sleep.