Robert E. Howard 
Hour of the Dragon 

The Hour of the Dragon, also known as Conan the Conqueror, is a fantasy novel by American writer Robert E. Howard featuring his sword and sorcery hero Conan the Cimmerian. It was one of the last Conan stories published before Howard’s suicide, although not the last to be written. Conan, captured and placed in a monster-infested dungeon, finds an unexpected ally and escapes. Meanwhile, the population of the Aquilonian capital, believing him dead, riots and is ready to accept an alternative King.