Puzzling riddles chase the special agent Dorongo even on vacation… While resting in Italy, he accidentally becomes the main witness in a case of a double murder of a major businessman and his wife that happened at a private party. Trying to track down the killer, Dorongo realizes that it could be anyone among the guests—yet there are no clear motives for the crime in anyone. And the detective reaches a conclusion that seems completely unbelievable—and even shocking—to the partygoers...