Derrick ParkerDerrick Parker (is a twenty-year veteran of the NYPD who headed the first special force unit dedicated to the investigation of hip-hop-related crime. Now off the force, Parker serves as the media's rap-related crime expert, appearing in Rolling Stone New York magazine, Vibe, Blender, The New York Times, Newsday, and dozens of other magazines and newspapers as well as on Unsolved Mysteries and shows on MTV, Fox, VH1, and Court TV. Read More Read Less