Side story of the Young Kindaichi Case Files. The cases in this series are:

1. "File 1 Testimony Puzzle/Alternative title: The Murder Train" (FILE1 証言パズル, "Fairu Ichi Shōgen Pazuru"?) 2. "File 2 Killing Poker/Alternative title: Unlucky Men in the Rain" (FILE2　殺人ポーカー, "Fairu Ni Satsujin Pōkā"?) 3. "File 3 Dead Person's Checkmate/Alternative title: The Great Chess Player, Akechi" (FILE3 死者のチェックメイト, "Fairu San Shisha no Chekkumeito"?) 4. "File 4 Ghost Hotel Murder Case/Alternative title: The Encounter" (FILE 4 幽霊ホテル殺人事件, "Fairu Yon Yūrei Hoteru Satsujin Jiken"?) 5. "Special Story Supt.Akechi Morning's Pretty Scenery" (スペシャルストーリー明智警視　優雅なる朝の風景, "Supesharu Sutōrī Akechi Keishi Yūga Naru Asa no Fūkei"?)

(Source: wikipedia)