Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Inconsistent, unreal, not one of L'engle's best

I wish that L'Engel would keep the storylines for the Austins more realistic. Most of her books in the Austin series are realistic, but I found this one to be far-fetched and heavy-handed. Instead of the political overtones I would have preferred a simpler story focusing on Vicky's relationship with Adam. I also find the premise of an ordinary high school student suddenly journeying to Antarctica and getting caught up in political intrigue to be inconsistent with the author's past work about Vicky Austin.