Who killed Galvan in Intuition?

I'm intrigued by the mystery surrounding the death of Galvan in the novel "Intuition." Could you please shed some light on who might have been responsible for his untimely demise? Are there any clues or hints scattered throughout the story that point to a potential suspect? Additionally, have any of the characters expressed any motive or grievance against Galvan that could have led to his murder? I'm eager to uncover the truth behind this enigmatic crime and uncover the identity of the culprit.