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Just read some of the reviews on amazon and it looks like they are completely different story lines. book 1: http://www.amazon.ca/100-Hundred-Kass-Morgan-ebook/dp/B00BAXFCO0/ref=sr_1_1?s=books&ie=UTF8&qid=1415248872&sr=1-1&keywords=the+100 book 2: http://www.amazon.ca/Day-21-Kass-Morgan/dp/0316234559/ref=tmm_hrd_swatch_0?_encoding=UTF8&sr=1-2&qid=1415248872
Just read some of the reviews on amazon and it looks like they are completely different story lines.
book 1:
http://www.amazon.ca/100-Hundred-Kass-Morgan-ebook/dp/B00BAXFCO0/ref=sr_1_1?s=books&ie=UTF8&qid=1415248872&sr=1-1&keywords=the+100
book 2:
http://www.amazon.ca/Day-21-Kass-Morgan/dp/0316234559/ref=tmm_hrd_swatch_0?_encoding=UTF8&sr=1-2&qid=1415248872