Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

This was the first Anne Perry book I have read, but it will be the last. I found the basic premise of the main character's amnesia to be a gimmick. It irritated me that he would never "come clean" about his lack of memory, especially when we find out that the people he worked with could see through it. I have enjoyed other murder-mysteries where the villain was a lot less obvious to the reader. It seems from her sales figures that I am in the minority - what am I missing?
Negative