Every guest is masked, making it nearly impossible to identify who pulled the trigger in the crowded room.
If you are using the book as a theme for a real-life event, consider these elements from the Leighann Dobbs Publishing series: A "supposedly" haunted mansion in Crescent Cove.
The protagonist and host who must unmask the killer to clear her friend's name.
The gunshot coincided with fireworks and popping corks, providing the perfect cover for the killer.