Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disappointing

Almost 30 years ago, McCarry wrote 2 of the best espionage thrillers ever produced, The Tears of Autumn and The Secret Lovers. Following the success of these books, McCarry produced a series of books involving some of the same characters in those books, particularly his hero, the CIA spy Paul Christopher. These later books were generally good but not at the level of Tears or Secret Lovers. McCarry's characterizations became shallower and the plots of his novels increasingly complicated and implausible. Old Boys, his first espionage novel in years, continues the unfortunate tendencies of his later books. The plot is highly implausible and in fact, not developed well. There is a host of characters, few of them developed well. This is a mediocre potboiler from someone who can clearly do better.