Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Hot on the Mommy-Track

I've read all of Ayelet Waldman's Mommy Track mysteries and this one may be the best yet. Juliet Applebaum is at work again, to clear the name of her best friend's step-brother. She must discover what went on in the past to figure out what has happened in the present. In the course of her investigation, she begins to wonder if she won't clear her friend's step-brother only to find out that her friend is the killer!The usual humor of Ms. Waldman's mysteries is in full flow here. Juliet is someone you'd love to have as a friend in the good times and would hope to have as a champion in the bad times.This is an exceedingly fun series.