"Elizabeth," she said and slammed down the phone.

I hung up. The piece I was looking for had just clicked into place. The letter wasn't written to Libby Glass at all. Laurence Fife had written it to Elizabeth Napier years ago. I was willing to bet on that. The real question now was how Libby Glass had gotten hold of it and who had wanted it back.

I took out my note cards and went back to work on my list. I had deliberately deleted Raymond and Grace Glass. I didn't believe either of them would have killed their own child, and if my guess about that letter could be verified, then it was possible that Libby and Laurence had never been romantically involved. Which meant that the reasons for their dying had to be something else. But what? Suppose, I said to myself, just suppose Laurence Fife and Lyle were involved in something. Maybe Libby stumbled on to it and Lyle killed them both to protect himself. Maybe Sharon got wind of it and he'd killed her too. It didn't quite make sense to me from that angle, but after eight years much of the real proof must have been lost or destroyed. Some of the obvious connections must have faded by now. I jotted down a couple of notes and checked the list.