Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Cab-Driving PI

A Trouble of Fools (1987) introduces Carlotta Carlyle, an ex-cop and now fledging private investigator, in Boston, Massachusetts. An elderly Irish woman hires Carlotta to find her missing brother, who drives a cab at the taxi company Carlotta used to work for. When the woman is attacked and her house searched, Carlotta finds a pile of money and begins to suspect the missing brother and his cabbie friends are involved with the IRA so the six-foot red-haired detective goes undercover as a cab driver. Carlotta's wit and humanity sparkle throughout, whether she is on the case, trying to figure an angle for collecting the prize her cat Thomas C. Carlyle has won, or protecting her "little sister" Paolina from the drug dealer who has set up shop near her school.http://www.stopyourekillingme.com/B_Authors/Barnes_Linda.html