Knockout Gas 2

His cries were cut short by Mr Crepsley, who swung into the room, darted ahead of me, grabbed the boy by his throat, and breathed sharply over his face. Gas shot up Richard's nose and into his mouth. For a second he struggled, terrified. Then his features relaxed, his eyes closed, and he slumped back on the bed.

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Cirque Du Freak: Killers of the Dawn, Chapter 9