Volume 31 was released on March 17, 2001 in Japan.
 Pottery Class Case
 File 307 - The Hidden Word
It appeared that Kikuyo had a 10 million yen debt and needed the insurance money to pay it. So, the police staff and Muneyuki started accusing her and as she was about to be taken to the police station, Sonoko was stunned by Conan's stun watch and stopped them. After explaining the trick used and the evidence, Muneyuki gave himself in. It turned out that during Christmas, while Muneyuki was cleaning the things of her late daughter, he found the broken box of the tie her daughter gave to Motoo, her husband. And when he went to the airport, wanting to give the tie to Motoo, instead of seeing a griefing man, he saw a cheerful man together with Kikuyo. Three days later, Sonoko received a picture from Makoto after she sent her tea cup. It turned out that he used it as a vase, thinking that the gigantic tea cup is one. When Ran told Conan to help her take her potato chips, he noticed that she has used her tea cup as a place for stationery. Curious of what she carved in the cup, she too it and saw the words "Stupid Detective" under the cup, there was another carving- "I'll be waiting for you". Conan then gave Ran her chips and was overjoyed as he played his games.
 Fake Kogoro Mouri Case
 File 308 - An Impostor Appears
 File 309 - Truth of the Impostor
 File 310 - The Time of Lies
 Netted Man Murder Case
 File 311 - Warm Ocean
 File 312 - Caught in a Net...
 File 313 - A Courageous Decision
 Naniwa Swordsman Case
 File 314 - The Naniwa Swordsman
 File 315 - The Invisible Swordsman
 File 316 - The Swordsman of Justice
 Tiger Scroll Case
 File 317 - The Ruler's Palace
 Cover in other countries
Republic of China (Taiwan)
 See also