Who is Philip Glass from Chasing the Dime: A Novel and what is their importance?

Philip Glass is a private investigator, working out of an office in Culver City. Mrs. Quinlan hires Glass to find her daughter. He is described as clean shaven man in his thirties with deeply set, dark eyes. He is also a cautious man, who knows a Billy Wentz and has no desire to become involved with him. Glass' specialty is missing persons.