Run Away, Vienos

Vieno family, a respectable and high-end family, was put in a real chaos right after the third Vieno's daughter, Roxanne, got killed to prevent the whistle to be blown. And before she died, she left a threat to her cousins which was just ignored. Just when they thought that curses aren't real, an adversity befell to the Vienos. Are they going to survive the malediction? Or the tragedy will end up the malediction itself?