The murder of rapper Tupac Amaru Shakur, or '2-Pac', who shocked the American hip-hop world three decades ago, is still considered one of the most mysterious criminal events in modern music history. The question of who is responsible for the death of Tupac, who was shot and killed at the age of 25 in 1996, has continued to attract fans, investigators, and believers in 'suspense horror' for three decades.But now this long-unsolved mystery has reached the courtroom. Nearly 30 years after Tupac's murder, 63-year-old Duane 'Keffe D' Davis has been formally charged for the first time. The US prosecution is...