David sent one letter before vanishing altogether:

I went out and looked west. My gaze shot back and forth across the horizon. Six snaps show the island coming in and out of view through heavy fog. I’m pulling something out of the thin, thin air. Just one little experience per square to crystallize. I’ve been in plain sight so that Mona couldn’t see me. Now I’m forgetting Mona. Francine teeters on the poolside. I think she’s doomed.