“Time of death?” he asked Felton.

“Going by the liver temp I would say four or five hours,” the medical examiner replied. “Eight o’clock, give or take.”

That last part troubled Bosch. He knew that by eight it would have been dark and all the sunset worshippers would have been long gone. But the two shots would have echoed from the overlook and into the houses on the nearby bluffs. Yet no one had made a call to the police, and the body wasn’t found until a patrol car happened by three hours later.

“I know what you are thinking,” Felton said. “What about the sound? There is a possible explanation. Guys, let’s roll him back over.”

Bosch stood up and stepped out of the way while Felton and one of his assistants turned the body over. Bosch glanced at Walling and for a moment their eyes locked, until she looked back down at the body.

Turning the body had exposed the bullet entry wounds in the back of the head. The victim’s black hair was matted with blood. The back of his white shirt was spattered with a fine spray of a brown substance that immediately drew Bosch’s attention. He had been to too many crime scenes to remember or count. He didn’t think that was blood on the dead man’s shirt.

“That’s not blood, is it?”

“No, it’s not,” Felton said. “I think we’ll find out from the lab that it’s good old Coca-Cola syrup. The residue you might find in the bottom of an empty bottle or can.”

Before Bosch could respond Walling did.

“An improvised silencer to dampen the sound of the shots,” she said. “You tape an empty plastic liter Coke bottle to the muzzle of the weapon and the sound of the shot is significantly reduced as sound waves are projected into the bottle rather than the open air. If the bottle had a residue of Coke in it, the liquid would be spattered onto the target of the shot.”