It can be tough working undercover for HM Revenue & Customs, but DJ Smith has more than a little help from her trained sniffer cat, Gorgonzola, a moth-eaten Persian with gourmet tastes and a mind of her own. This first investigation finds DJ and Gorgonzola on the trail of a heroin smuggling ring operating in and around Edinburgh. Here DJ meets a cast of memorable characters including American golfing fanatic Hiram J Spinks, the glamorous Italian Signora Gina Lombardini, and the not so glamorous self styled gastronome extraordinaire Felicity Lannelle. Beneath the innocent surface of the country house hotel eddies a sinister undercurrent. As one death follows another, who among the guests specialises in making murder look like accident?