I was very impressed with this book and its predecessor, "[book:Compass to Vinland|59207834]." This is a fun middle-grade Viking-legend-inspired fantasy that is nonstop adventure. The characters are well-written, and the magic system is intriguing. The world-building is also a delight for readers to stroll through and experience. Each book focuses on one of our three main characters, and this one follows our Cerebral, Maria, as she learns and develops her powers. This is a very creative and unique series, and I look forward to book 3. A few notes. The references to Frankenstein should be to Frankenstein's monster. Perhaps 14 year olds could make this error, but if that's the case, someone should correct them later in the narrative. I am also not a fan of insta-learning. The shoes the kids are wearing provide them with instant and advanced abilities. I enjoyed how there was some learning and growing in this book for Maria, but Rusty basically put on the shoes (book 1) and became the most powerful warrior within a few pages. I hope book three offers more growth for Rusty as his POV is next. Overall, this is a page-turning fantasy series that I really enjoyed exploring. I hope its a book more young readers pick up.