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Jun 23, 2017Yohoona rated this title 4.5 out of 5 stars
As sequels and second books of series' goes, this book is a gem. It is one of the few that can be considered equal to its prequel, possibly even better. In Mark Walden's second adventure, Otto and his friends are exposed to an even bigger danger than before. While reading this fast-paced, exhilarating high-tech adventure, remember one thing.... Never underestimate a big eater.