Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Major Disappointment

I've been a long time fan of Nevada Barr's writing, especially the Anna Pigeon series. However, with this last novel, I've come to the sad conclusion that the series is running out of steam. Anna seems tired. Much of this latest novel is descriptive material rather than action. I learned more about Ellis Island and the Statue of Liberty than I ever wanted to know, and I'm one of those immigrants that passed through Ellis! I do not recommend this book. To those who are first time readers of the series, I would urge you to read the first several books - those are outstanding! Also, a question aimed at those who are Anna Pigeon fans: what happened to the characters Christina Walters and her daughter, Alison? They were favorites of mine, but after the first couple of novels, they somehow disappeared. What happened to them?