The File Series is the first part of Kindaichi Case Files. It started in 1992 with the Opera House Murder Case case and ended in 1997 with the Reika Hayami Kidnapping Murder Case. It was followed by the Case Series.
| CaseNumber | Case Name | First ChapterReleased Date | Last ChapterReleased Date | Length | AnimeAdaptation | Live-ActionAdaptation |
| 1 | Opera House Murder Case | 28 October 1992 | 2 December 1992 | 6 Chapters |  |
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| 2 | Western-style Village Murder Case | 9 December 1992 | 10 March 1993 | 11 Chapters |  |
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| 3 | Snow Yaksha Legend Murder Case | 17 March 1993 | 26 May 1993 | 10 Chapters | |
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| 4 | School's Seven Mysteries Murder Case | 2 June 1993 | 4 August 1993 | 10 Chapters | |
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| 5 | Treasure Island Murder Case | 11 August 1993 | 20 October 1993 | 10 Chapters | |
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| 6 | Broken Heart Lake Legend Murder Case | 27 October 1993 | 19 January 1994 | 10 Chapters | |
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| 7 | Western-style Hotel Murder Case | 26 January 1994 | 13 April 1994 | 12 Chapters | |
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| 8 | Head Hanging School Murder Case | 27 April 1994 | 20 July 1994 | 12 Chapters | |
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| 9 | Hida's Trick of House Murder Case | 3 August 1994 | 26 October 1994 | 12 Chapters | |
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| 10 | Murder Committed by Young Kindaichi | 9 November 1994 | 1 March 1995 | 14 Chapters | |
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| 11 | Tarot Mountain Hut Murder Case | 8 March 1995 | 14 June 1995 | 14 Chapters | |
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| 12 | Wax Doll Castle Murder Case | 28 June 1995 | 27 September 1995 | 13 Chapters | |
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| 13 | Murder by Gentleman Thief | 18 October 1995 | 24 January 1996 | 13 Chapters | |
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| 14 | Graveyard Island Murder Case | 31 January 1996 | 17 April 1996 | 11 Chapters | |
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| 15 | Magical Express Murder Case | 24 April 1996 | 31 July 1996 | 13 Chapters | |
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| 16 | Black Butterfly of Death Murder Case | 7 August 1996 | 13 November 1996 | 13 Chapters | |
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| 17 | French Silver Coin Murder Case | 20 November 1996 | 12 March 1997 | 14 Chapters | |
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| 18 | Demon God Site Murder Case | 19 March 1997 | 18 June 1997 | 12 Chapters | |
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| 19 | Reika Hayami Kidnapping Murder Case | 3 September 1997 | 5 November 1997 | 9 Chapters | |
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