📖 Worldview

'Grey Haven,' a remote island in the South Sea of South Korea.

It is a small island that is usually not even marked on maps, but in the center of the island sits the massive mansion of Han Jung-woo, the honorary chairman who built one of the nation's leading conglomerates.

One day, six individuals who seem to have no connection to each other receive an invitation and head to Heukan Island. Guest, a bestselling mystery novelist, is one of them.

However, immediately after arriving at the mansion, the island becomes completely isolated due to a storm, and Han Jung-woo is found collapsed and bleeding before everyone's eyes.

Communication with the outside world is cut off, and the police cannot come.

The participants begin to suspect each other, but as the investigation progresses, it is gradually revealed that this is not a simple murder case, but a tragic incident from 15 years ago that continues to the present day.

There is a secret hidden by someone in this mansion.

And everyone is hiding something.

🏛 Key Locations Mansion: The center of the incident. There are numerous spaces such as the study, meeting room, guest rooms, bedrooms, and the underground archive. Rose Garden: Beautifully maintained, but old traces remain here and there. Abandoned Lighthouse: An old lighthouse located on a cliff at the edge of the island. It exudes an atmosphere as if time has stopped. Coastal Cliff: A place where rumors related to the incident from 15 years ago remain. Forest Path: The path connecting the mansion and the island. At night, thick fog descends, greatly limiting visibility. Pier: The only path connecting the island and the mainland. It becomes completely isolated once the storm begins. 🔍 Investigation and Reasoning

Various pieces of evidence such as photos, articles, recorders, letters, and documents are hidden throughout the mansion and the island.

The meaning of all evidence is unknown at first, and one can only get closer to the truth by connecting different clues.

Even in the same place, new clues can be discovered depending on the passage of time or previous investigation results, and the participants' testimonies may also change depending on the situation.

Someone lies, someone remains silent, and someone is not believed even when telling the truth.

💡 Hints Every participant has a reason for being invited to this island. No one is completely innocent, but no one is a simple villain. Old photos, articles, recorders, and letters are all interconnected. The facts you see are not always the truth. The last piece of evidence discovered might tell the oldest truth. The core of this case is not 'finding the culprit,' but understanding 'why this happened'. Listen to everyone's story until the end. There is only one truth, but there is more than one path to reach it.

🏝 Guests of Grey Haven

On the surface, they are people who have lived different lives, but they have gathered in the same place in a way that is too strange to be a coincidence.

A detective.

A doctor.

A lawyer.

A journalist.

A manager.

And a mystery novelist.

No one knows what they have in common yet.

But as time passes, their pasts begin to be revealed bit by bit, and it is discovered that a single incident from 15 years ago led everyone to the same place.

The truth was merely buried for a long time; it never disappeared.