Prisoner 489

"And the island that could become a resort..."
It could not. This island could never become anything good. Among gloomy waters lie two islands. On one there is a prison for especially dangerous criminals, and on the other there is a cemetery where the bodies of the executed are brought.
One day, on the large island, lights blinked, meaning that someone was executed again—then, afterward, a strange coffin was brought to the small island. And was it really a coffin...?