Clamp School Paranormal Investigators

 is a set of three illustrated novels written by Tomiyuki Matsumoto in collaboration with Japanese manga group, Clamp. These novels are based upon role-playing game (Clamp Gakuen TRPG) sessions played by Game master Tomiyuki Matsumoto, Takeshi Okazaki and Clamp members. The main characters are based on player characters played in the game sessions. The novels were published by Tokyopop in North America in 2004 and 2005.
The story takes place on Clamp Campus where a series of paranormal events are occurring. Misadventures and solutions occur as five students act as investigators of the supernatural incidents.
Drama CDs.
In addition to the three light novels, three drama CDs have been released, entitled "File 1", "File 2", and "Strike Sparks".