Dover and the Claret Tappers (A Dover Mystery # 8)

Detective Chief Inspector Wilfred Dover is the most idle and avaricious hero in all of crime fiction. Why should he even be bothered to solve the case?
Dover and the Claret Tappers is a surprising departure for the series featuring Scotland Yard's least competent detective, and the first to depart is none other than Dover himself.
When the doubtful detective suddenly vanishes from Scotland Yard, along comes an ultimatum from a gang of kidnappers, the Claret Tappers. They demand not only a stout ransom, but also the release of two prisoners – a multiple bigamist and a nymphomaniacal shoplifter.
How Dover gets out of this one is only the beginning. For just as the case is getting cold, the Claret Tappers strike again. And once more Dover is aroused from his stupor in a most unexpected way.