Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Solid Entry in the Spenser Series

THIN AIR isn't a great novel, but it's an entertaining book by one of the best crime writers alive. The plotline is simple: Frank Belson's new wife has gone missing and he asks Spenser to help find her. During his investigation, Spenser discovers that Belson's wife has quite a number of skeletons in the closet.This novel is relatively predictable, but it's a fun read because of Parker's remarkable level of skill with language and dialogue. THIN AIR is relatively original because Hawk isn't in it, and also because Spenser has an interesting new Latino sidekick. The result is a storyline that seems relatively fresh and funny.If you like Parker's work, you should enjoy THIN AIR, although I would recommend earlier entries in the Spenser series if you're looking for something genuinely great.