Volume 18

Volume 18 was released on January 17, 1998 in Japan.

Actor's Apartment Case
Anime Episode 102-103: The Historical Actor Murder Case

File 171 - It Must Be Similar...
The media had arrived at the apartment. They want to know if it's true that Isami Nagakura was murdered.

Shinichi's First Love Case
Anime Episode 100-101: The Memories of First Love Case

File 175 - Unlock Your Heart!?
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Asami confesses to Ran that despite the rumors she started, Asami confessed to Shinichi in middle school and was instantly rejected because he likes someone else. Asami relates the description Shinichi gave, which Sonoko recognizes as a description of Ran, but Ran is oblivious and asks Sonoko if there is such a girl.

Missing Older Brother Case
Anime Episode 129: The Girl from the Black Organization and the University Professor Murder Case

Murdered Professor Case
Anime Episode 129: The Girl from the Black Organization and the University Professor Murder Case

Trivia

 * The title for each chapter are worded as the following in Case Closed:
 * File 171 - The Same?
 * File 175 - To Win a Heart
 * File 176 - The Transfer Student
 * File 177 - Woman in Black
 * File 179 - The False Girl
 * File 180 - Checkmate