A party was held on a remote island. During the event, the master of the mansion was murdered.
The murderer's aim is to annihilate the entire family of the mansion's owner.
A murderer attempts killings by sneaking into rooms night after night.
Anyone encountered in a room, whether part of the family or not, was indiscriminately murdered.
It is imperative to discover the murderer and expel them from this island.
Now begins the ultimate psychological game of life and death between the family and the murderer!
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