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. 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. When they encountered Shakur and Knight, Davis claimed to see Shakur reach for a weapon and wrote that "one of my guys from the back seat grabbed the Glock and started bustin' back." In his book, Davis claims that Combs wanted Knight and Shakur killed.