evidence: One night, he came home to his apartment in Baltimore and turned on the evening news. He discovered, to his dismay, that there had been another suicide at Guantánamo Bay: A Saudi national named Abdul Rahman Ma'ath Thafir al-Amri was found hanging in his cell in Camp 5. Memories of Cuba, and what Hickman saw on June 9, flooded back. "For the next few weeks, I couldn't sleep," Hickman writes in his new book,Murder at Camp Delta: A Staff Sergeant's Pursuit of the Truth About Guantánamo Bay. "When I did finally shut my eyes, I began having nightmares."