The note can be found on a desk inside the Carson family bunker.
I've done all I can to help my family, to try to help my neighbors, but somehow... somehow it all went wrong. Beth. The kids. I want to yell at Maddie for leaving her toys around or remind Max to poke air holes in his firefly jar. But they're gone. Dead.
Should I have stopped when they came to the house? Or denied Beth her medicine? Should I never have listened to Raleigh to begin with? All I wanted to do was save them, and now I'm left with nothing. My only comfort is that I'm about to leave this all behind, and Beth, if I don't get to join you all in the afterlife... forgive me.