Who was the Trojan spy captured by Odysseus and Diomedes? Dolon was the Trojan spy captured during the night raid described in Book 10 of Homer's Iliad.
Dolon volunteered after Hector asked for someone to scout the Greek camp. Hector promised him Achilles' horses and chariot as a reward, although Dolon was later told that Hector could not realistically give him that prize. Dolon disguised himself in a wolf skin and moved toward the Greek ships.
At the same time, Odysseus and Diomedes were conducting their own night mission. They spotted Dolon, pursued him, and captured him. Under questioning, he revealed the arrangement of the Trojan and allied forces, including the location of the newly arrived Thracian troops led by King Rhesus.
Dolon is sometimes confused with Rhesus because the same episode ends with the Greeks attacking the Thracian camp. In the Iliad, however, Dolon is the captured spy, while Rhesus is the Thracian king whose horses are stolen. After extracting the information, Diomedes killed Dolon before the pair attacked the sleeping Thracians.