Teitan High School's Ghost Story (Part One)

Sonoko, Ran, and Conan go to the school where they discover the real Dr. Araide is back. He informs Conan of what happened, and told him that Jodie told him to tell him everything. Later, Sonoko rants on about the death of a student terrorizing the school, and tells them stories to support this claim. Later the desk is found outside with a name on it. What's strange is that it's raining, yet, there's no footprints in the mud.