Mosely is from the New Orleans Police Department and is an old friend of Gabriel's.
Mosely just happens to be staying at the same hotel, having come on a 'treasure hunt' vacation package.
"It sounded like a lark," he says, but his behavior is decidedly strange. He keeps disappearing, for one thing. For another, he seems a little too interested in Gabriel's case.
Mosely further bewilders by insisting that Gabriel not let anyone on the tour know that he's a cop which, to Gabriel's thinking, is the only remotely interesting thing about him. Why does Gabriel get the feeling he's not really as 'off-duty' as he claims?