Instruct: Classify a review as either positive or negative.
Query: Disappointed

I was a big fan of the first four seasons with clever detective work and interplay between the characters. Season five lost all of this. The little detective work this season has tends to be bumbling with successes primarily coming from luck instead of a clever assembly of the miscellaneous facts.Even worse, the characters seem uncomfortable with their lines like you might expect during the first year of a series. I don't know how that happened after they have been together for five years. Nearly all the personalities have shifted enough so they look and sound like actors instead of characters.In the end I don't know if it was a director change or a writer change or both but I got too bored to watch all the episodes.