“I don’t believe in ghosts that come rattling to your bedside,” says the Canadian photojournalist Paul Watson in this haunting new book. “Because truth is I live with one.”

In October 1993, Watson was on the ground in Mogadishu when the body of an American serviceman, William David Cleveland, was dragged through the streets and desecrated by a Somali mob. Watson clicked his shutter on Cleveland’s death, and the resultant photos won him a Pulitzer Prize. They would also frighten the Clinton administration into beating a hasty retreat from its intervention in Somalia. From that moment on, Watson would hear Cleveland’s voice in his head: If you do this I will own you forever.