When Gemma's romantic holiday with her boyfriend is cancelled, the tearoom sleuth finds herself heading to Vienna instead, with her cat Muesli and the nosy Old Biddies for company. And it's not long before they stumble across a murder right in the heart of Austria's historic capital. A handsome art critic dies suspiciously at their hotel and the Old Biddies are determined to sniff out the killer. Is it the bitter hotel owner nursing a grudge? The critic's jealous mistress wanting revenge? Or even the visiting American who seems inexplicably nervous around the police? Soon Gemma is dragged into an impromptu investigation which has her tackling Vienna's famous pastries, snooping in police files and even braving a nude sauna in search of clues! But can she sort the suspects from the Schnitzel, and solve the mystery before the killer strikes again?