More than a little irritated to find that the dead could he as bothersome as the living, I picked up the Ziploc containing the letter and carried it to the front room. The note was brief and handwritten.

David,

We must meet again. I finally confronted Godin with my suspicions. His reaction astounded me. I don't want to commit anything to paper, but I know I'm right. Lu Li and I are driving to the blue place on Saturday night. Please join us. It's close quarters, but discreet. It may be time for you to contact your late brother's friend again, though I wonder if even he can do anything at this point. Things like this have a momentum greater than individuals. Greater even than humanity, I fear. If anything should happen to me, don't forget that little gold item I asked you to hold for me one day. Desperate times, mate. I'll see you Saturday.

There was no signature, but below the note was a hand-drawn cartoon of a rabbit's head and the face of a clock. The White Rabbit, an affectionate nickname given Fielding by his Cambridge physics students. Fielding always carried a gold pocket watch, and that was the "little gold item" that he had asked me to hold for him one day.

We were passing each other in the hallway when he pressed the watch and chain into my hand. "Mind keep¬ing that for an hour, old man?" he'd murmured. "Lovely." Then he was gone. An hour later he stopped by my office to pick it up, saying he hadn't wanted to take the watch into the MRI lab with him, where it could have been smashed against the MRI unit by the machine's enormous magnetic fields. But Fielding visited the MRI lab all the time, and he'd never given me his pocket watch before. And he never did again. It must have been in his pocket when he died. So what the hell was he up to that day?

I read the note again. Lu Li and I are driving to the blue place on Saturday night. Lu Li was Fielding's new Chinese wife. The "blue place" had to be code for a beach cabin at Nags Head, on North Carolina 's Outer Banks. Three months ago, when Fielding asked for a recommendation for his honeymoon, I'd suggested the Nags Head cabin, which was only a few hours away. Fielding and his wife had loved the place, and the Englishman had apparently thought of it when he wanted a secure location to discuss his fears.