The military claims the island is not occupied by humans anyway, so the quarantine is not a huge deal.

Locked in the closet, Tim bickers with the two voices in his head: the rational voice called Hal 9000, and the other voice that advocates for the worms, asking Tim to eat. At first, the worm voice is kind and gentle while Tim eats wallpaper. The voice starts getting meaner, and Tim begins to cry without realizing it. Shelley, alone in the cabin, hums a creepy song about eating worms while he seals up the crack between the door and the floor, taking away the last bit of light Tim had.

Shelley sealed off Tim’s light just to torture him emotionally. However, if the others ask, he’ll claim he wanted to prevent any worms from escaping the closet. Everyone else is still asleep outside. Shelley tortures a spider.

Shelley already knows that something is amiss—there are a lot of extra boats and helicopters around, which are probably the military, here due to the dead man who had the worms. Shelley assumes no boat will be coming to pick them up. This thought makes him happy because it means he can probably start torturing and killing humans instead of just animals.