Meet the world's most unusual undercover team...Working undercover for HM Revenue & Customs can be tough, 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.In this first case DJ Smith and Gorgonzola are on the trail of a drug-smuggling ring operating in and around Edinburgh. Beneath the innocent surface of the White Heather Hotel eddies a sinister undercurrent. One death follows another. Who among the cast of formidable and flamboyant guests specialises in making murder look like accident? As sea mists gather, a deadly game of cat and mouse is played as the killer awaits a chance to strike...An immensely readable and very funny foray into the dark and often dangerous world of undercover operations, told in the Mulgray Twins' own inimitable style.

Join DJ Smith an her feline friend Gorgonzola, heroes of the acclaimed No Suspicious Circumstances, as they prepare to go undercover once more.DJ Smith is sent on her most daunting task to date. After the murder of an undercover agent, it is DJ's duty to take over where he left off – infiltrating a suspected money-laundering operation run by the formidable Ambrose Vanheusen. A ruthless criminal he may be, but DJ knows he has an Achilles heel: an obsession with his Persian Cat. DJ's passport into Vanheusen's empire comes in the form of her unlikely sidekick, Gorgonzola, a moth-eaten ginger Persian and sniffer cat extraordinaire.Under Suspicion confirms identical twin sisters Helen and Morna Mulgray as top notch crime writers – after all, two heads are better than one...