The Old Blue Castle Investigation Case
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| Episode 136-137 (Int. Episode {{{int-episode}}}) | |
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| Title: | The Old Blue Castle Investigation Case (Part 1) |
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| Original airdate: | February 22, 1999 (Part 1) March 1, 1999 (Part 2) |
| Season: | 6 |
| Cast: | Conan Edogawa Ai Haibara Dr. Agasa |
| Case solved by: | Ai Haibara |
