Instruct: Classify the given review into positive or negative sentiment.
Query: Best for those who have already read many of the other Nero Wolfe novels

While I greatly enjoyed reading the Black Mountain, it was, in part, the fact that it was so different from the other novels that I found it fascinating. Throughout the series there are somewhat vague references to Wolfe's life before coming to the U.S. This novel fills in much of that back-story, and gives the avid fan a better idea of what makes Wolfe tick. However, I would have to agree with reviewers who don't recommend this book to someone new to the series. It is not consistent with the rest of the novels in the series in setting or tone, and is best enjoyed by those who appreciate the difference, as well as the additional insights into Wolfe's character and background.