After meeting his son, the cold case team is inspired to reopen the case of an innovative jazz musician, Billy Sanders, who was murdered in 1970. They discover that Billy had been very involved with creating the Philly sound that became big business in the 1970s, but that he had never been credited. They also discover that his father was a reverend at a local church where Billy played the organ, and that his father disapproved of his new musical direction. The team suspects that either Billy's employer, Ronde Brooks, had killed him for the rights to his music, or that his father had killed him for abandoning the church. However, they discover that a young female collaborator, Chandra, had killed him after he planned on leaving his job with Ronde to strike out on his own.