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- I looked around at the campers' faces, some sullen and suspicious, some grinning stupidly, some eyeing me as if they were waiting for a chance to pick my pockets.Chapter 6 (61% in)
- I thought about some of the kids I'd seen in the Hermes cabin, teenagers who looked sullen and depressed, as if they were waiting for a call that would never come.Chapter 7 (23% in)
There are no more uses of "sullen" in The Lightning Thief.
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