Volume 51

Volume 51 was released on November 15, 2005 in Japan.

Yuki-Onna Murder Case
Anime Episode 490: Heiji Hattori vs. Shinichi Kudo: Deduction Battle on the Ski Slope

Cellphone SOS Case
Anime Episode 438: The Pursuit of the Fish E-mail

Seashell Hunt Case
Anime Episode 443-444: Clam Digging With a Sigh

Cat Sitting Case
Anime Episode 445: Secret of the Russian Blue

File 528 - Russian Blue
Due to Eri's previous cat dying a month earlier, she has taken in a cat that her friend gave her, naming it Goro. Due to having to go meet a client, and the cat sitter being in bed sick, Goro is left at the Mouri Detective Agency for Kogoro, Ran and Conan to watch over for three days.

Sealed Window Case
Anime Episode 446-447: The Sealed Western-Style Window

Trivia

 * The title for each chapter are worded as the following in Case Closed:
 * File 522 - Revenge in the Blizzard
 * File 523 - A Fishy Incident
 * File 524 - The Three Fishes
 * File 525 - Crestfallen Clamdigging
 * File 526 - The Mystery of the Plastic Bottle
 * File 527 - The Mixture Trick
 * File 528 - Russian Blue
 * File 529 - Ricky is Ricky
 * File 530 - The Closed Window
 * File 531 - The Locked Room Setup
 * File 532 - The Demon's Loophole