City of the Rats

City of the Rats is the third book in the eight-volume Deltora Quest series written by Emily Rodda. It continues the trio's journey to find the seven missing gems of Deltora, braving dangers and guardians in each book.

Lief, Barda, and Jasmine leave the Lake of Tears, after they have retrieved the Ruby. They are now searching for the opal, which is located in Hira, or the City of the Rats. While travelling, they find signs which all have the word "Tom" written on it. They then find themselves in a trap that Thaegan's remaining eleven children had prepared. With the help of Filli, the three managed to kill all the children except for one, Ichabod, and continue on their quest.

They find and enter Tom's shop and buy useful provisions such as Fire Beads, Water Eaters, Glowing Bubbles, and Instant Bread. They also bought three animals called Muddlets. Muddlets had three legs and can be ridden much like a horse. Despite Tom's directions, Lief didn't listen to him and went the wrong way. The three lost control of the Muddlets as they ran on their own. Lief, Barda and Jasmine followed the Muddlets home, the city of Noradz and become trapped. Noradz has customs that keeps the city vigorously clean. When Filli comes out of hiding from Jasmine's shirt, a Ra-Kacharz mistakes it for a rat and gives the trio two choices, to live or to die. Lief was commanded to pick a card labeled either Life or Death out of a cup. Realizing that both cards say Death, Lief tricks the Ra-Kacharz and the trio is thrown into prison. A girl named Tira managed to free them and shows them the secret way out, by passing through the kitchen trash tube. They survive the dangers of the tube by wearing the Ra-Kacharz clothes that they stole and finally reached the Broad River. Using the Water Eaters, Lief, Barda, and Jasmine crossed the river, only to find that there were rats waiting for them. They managed to escape the deadly rats using the explosive Fire Beads and enter the city's center. The Glowing Bubbles come into use and lights their way as they move through the dark. There, Lief starts to hear voices, which was revealed to be of Reeah's, a huge snake called the King of Rats. The crown atop of Reeah's head housed the opal. Lief realized that the past inhabitants of the City of the Rats were the people of Noradz. He also realized that "Noradz" was a homophone of "No Rats" and "Ra-Kacharz" was a homophone of "Rat-Catchers". The overrun of rats in their city had caused them to move and take up vigorously clean customs. Also, "Noradzeer", which is repeated very often by the people of Noradz, appears to be a homophone of "No Rats Here". Lief realizes that Reeah had set a trap for them. After a fight, Lief and Jasmine defeats the snake. Lief touches the opal to take it, and gets a vision of him sinking into the Shifting Sands. Lief remembers that the opal's vision of the future is not always true, they continue their quest to seek their fourth gem at the Shifting Sands.