20. House of Villains, Season 3
He had persuaded his science teacher to help him make a makeshift rocket. Somehow, he had managed to get his hands on the ingredients for gunpowder - potassium nitrate, sulphur and charcoal.，更多细节参见搜狗输入法下载
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The find was reported to the coroner and an inquest will be held to determine if it is treasure. Its long-term future has yet to be decided.