Novel 8

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| ‹  [A Challenge Letter to Shinichi Kudo ~Murder in the Court~](/wiki/A_Challenge_Letter_to_Shinichi_Kudo_~Murder_in_the_Court~ "A Challenge Letter to Shinichi Kudo ~Murder in the Court~") | [**List of Novels**](/wiki/Japanese_Novels "Japanese Novels") | [A Challenge Letter to Shinichi Kudo ~Showdown! Shinichi Kudo vs Heiji Hattori~](/wiki/A_Challenge_Letter_to_Shinichi_Kudo_~Showdown!_Shinichi_Kudo_vs_Heiji_Hattori~ "A Challenge Letter to Shinichi Kudo ~Showdown! Shinichi Kudo vs Heiji Hattori~")  › |
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| **Novel 8** | |
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| **Information** | |
| Title: | A Challenge Letter to Shinichi Kudo ~Love Formula Murder Case~ |
| Japanese Title: | 工藤新一への挑戦状～恋愛数式殺人事件～ |
| Release date: | December 14, 2011 |
| ISBN: | ISBN 978-4-09-123446-9 |
| Publisher: | [Shogakukan](/wiki/Shogakukan "Shogakukan") |
| **Creators** | |
| Original work: | [Gosho Aoyama](/wiki/Gosho_Aoyama "Gosho Aoyama") |
| Author: | [Takehiko Hata](/wiki/index.php?title=Takehiko_Hata&action=edit&redlink=1 "Takehiko Hata (page does not exist)") and [Takahisa Taira](/wiki/Takahisa_Taira "Takahisa Taira") |
| Artwork: | [Yutaka Abe](/wiki/Yutaka_Abe "Yutaka Abe") |
| **Case** | |
| Cast: | [Shinichi Kudo](/wiki/Shinichi_Kudo "Shinichi Kudo")   [Ran Mouri](/wiki/Ran_Mouri "Ran Mouri") |
| Suspects: |  |
| Case solved by: | [Shinichi Kudo](/wiki/Shinichi_Kudo "Shinichi Kudo") (x4) |
## Contents
* [1 Cast](#Cast)
* [2 Gadgets](#Gadgets)
* [3 Case 1: The Famous Movie Director Murder Case](#Case_1:_The_Famous_Movie_Director_Murder_Case)
+ [3.1 Cast](#Cast_2)
+ [3.2 Situation](#Situation)
+ [3.3 People](#People)
+ [3.4 Resolution](#Resolution)
* [4 Case 2: Love Formula Murder Case](#Case_2:_Love_Formula_Murder_Case)
+ [4.1 Cast](#Cast_3)
+ [4.2 Situation](#Situation_2)
+ [4.3 People](#People_2)
+ [4.4 Resolution](#Resolution_2)
* [5 Case 3: The Kidnapped Inheritor](#Case_3:_The_Kidnapped_Inheritor)
+ [5.1 Cast](#Cast_4)
+ [5.2 Situation](#Situation_3)
+ [5.3 People](#People_3)
+ [5.4 Resolution](#Resolution_3)
* [6 Case 4: The Tripped Circuit Breaker](#Case_4:_The_Tripped_Circuit_Breaker)
+ [6.1 Cast](#Cast_5)
+ [6.2 Situation](#Situation_4)
+ [6.3 People](#People_4)
+ [6.4 Resolution](#Resolution_4)
* [7 Gallery](#Gallery)
* [8 Cover in other countries](#Cover_in_other_countries)
* [9 See also](#See_also)