Duane “Keffe D” Davis, 63, faces a single count of murder with a deadly weapon with the intent to promote, further or assist a criminal gang in Shakur's death. Prosecutors say if Davis hadn't written explicitly about the killing, or talked about it in interviews, it's likely no one would have been charged. The rival gangs fought and retaliated against each other both before and after Shakur's death. Davis' book will be front and center at the trialThe prosecutors' case relies on “Compton Street Legend,” the book Davis co-authored about the shooting and his time in the Crips, as well as police and media interviews he participated in. In his book, Davis claims that Combs wanted Knight and Shakur killed.