SEASON 7, EPISODE 704 - The team reopens the 1970 murder case of a 20-year-old musician, Billy (Wesley Jonathan - What I Like About You), who was secretly instrumental in creating the popular Philadelphia soul sound. Billy tried to keep his involvement with the soul scene a secret from his strict preacher father for whom he was an organist. Guest star Loretta Devine (Grey's Anatomy, Boston Public) appears as Chandra Patterson, a choir girlfriend of Billy, and guest star Anna Maria Horsford (The Shield. The Wayans Bros.) appears as Geraldine Watkins, the owner of an after-hours Jazz club. Jamie Hector (The Wire, Heroes) and Steven Williams (The X Files, 21 Jump Street) also guest star as, respectively, the 1970 and 2009 incarnations of Ronde Brooks, a record label founder. Meanwhile, Lilly meets her teenaged stepbrother, Finn (guest star Brett Davern - Player 5150).