The two volumes contain one long case, "Murder Committed by Inspector Kenmochi", as well as two short stories in the second volume. The first one-shot, "Evil Spirit at the Diving Pool / Diving Pool's Evil Spirit" was first published in the July 2009 edition of Shounen Rival and is about an evil spirit at the diving pool at Kindaichi's junior high school. The second one-shot is titled "The Campsite's Mysterious Event." Both short stories feature Kindaichi in junior high school.
All Kindaichi Shounen No Jikenbo - Kenmochi Keibu No Satsujin Chapters