Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Kirk McGarvey is the man!

Hagberg has introduced us to a rich, interesting spy character, Kirk McGarvey, an assassin in retirement from the CIA. We learn about McGarvey and we also meet his Russian arch nemesis, who is an assassin. The book starts out a bit slow, but it picks up and is a great spy novel. Highly recommend the McGarvey series to readers.