Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Ending out of character

This book may be supposed to be a thriller, but it wasn't very thrilling. For someone who was supposed to be so horrible, I was left wondering when anything really terrible was going to happen. And the ending seemed to be so out of character. Without spoiling it for someone who may read it, I was very dissapointed in the ending.