Judge Clarke is a nationally recognized DNA expert who prosecuted the high-profile cases of O.J. Simpson and David Westerfield. A graduate of the University of California, Judge Clarke received his law degree from the University of San Diego. He has dozens of television appearances, including "Larry King Live" and Fox's "Last Chance: Guilty or Innocent." Requests for him to speak come in from far-flung parts of the globe like the United Arab Emirates and Rio de Janeiro. Judge Clarke’s introduction to forensic science came in 1984, when he was a second-year prosecutor in the San Diego County District Attorney's office. At that time he successfully co-prosecuted the 1989 death-penalty case of David Allen Lucas, who had fatally slashed the throats of two women, including a USD co-ed, and a 3-year-old boy. The case lasted five years, including a yearlong effort to introduce blood evidence linking Lucas to one of the victims through serological testing, a precursor to DNA testing. During his time as Deputy District Attorney, Judge Clarke worked with the San Diego DNA Project, the first of its kind in the country, to sort through appeals from convicted criminals who might be eligible for DNA testing to help prove their innocence.