Beautiful Vienna, luxurious hotel “Marriott,” the eve of New Year’s… The famous forensic expert Drongo comes here to celebrate his favorite holiday in a narrow circle of family and loved ones. But someone else’s trouble ruins all his rosy plans. During a festive dinner in the hotel restaurant, a major businessman Galimov is murdered. His body, with a cut throat, is found in the toilet on the first floor. And there are no leads. Unless you count a few phrases overheard at the neighboring table that the investigator happened to catch with half an ear…