4 is Regallag the Axe
Clue: The ony clue at the murder scene was a single glove, with the thumb on the right, covered with images of star trek, star wars and dungeons & dragons characters.
Witnesses reported that they heard the faint strumming sounds of a musical instrument being played just before the gunshot, but nobody interviewed could agree on what it sounded like–one guessed a lyre, another guessed a harp, and a third wondered if it was a banjo.
(7) Clue: A witness said that at about the time of the murder he saw a ghostly figure leaving the crime scene. He described the suspect as having a low and depressed skull with strong supraciliary ridges, and two large teeth. “It was like he wasn’t quite human,” the witness stated.
Hillbilly Queen and Earthworm Jim are both correct (for look@hergo and Spectre of Pithecanthropus, respectively).
(8) Clue: Several people reported hearing two shouts at about the time of the murder. “It sounded like somebody really needed to let it all out,” one witness said.
(9) Clue: Police described the crime as the perfect murder and stated that it was unlikely to ever be solved. “The perpetrator was an absolete genius,” said Lieutenant Zotti.