Martha Grimes

"In the latest series outing, The Knowledge, the Scotland Yard detective nearly meets his match in a Baker Street Irregulars-like gang of kids and a homicide case that reaches into east Africa. Robbie Parsons is one of London's finest, a black cab driver who knows every street, every theater, every landmark in the city by heart. In his backseat is a man with a gun in his hand--a man who brazenly committed a crime in front of the Artemis Club, a rarefied...

Jury investigates the death of a young escort who has been murdered behind a local pub. The only witness is the establishment's black cat, who gives neither crook nor clue as to the girl's identity or her killer's.