Final answer:
The described situation involving the police and the narrator in 'The Tell-Tale Heart' by Edgar Allan Poe is an example of gothic horror that showcases the psychological unraveling of the narrator. The other passages hint at various types of literature, including fantasy and psychological thrillers.
Step-by-step explanation:
The reference to the police coming the day after the murder and the narrator taking them to the old man's room pertains to Edgar Allan Poe's classic short story The Tell-Tale Heart. In this tale, the narrative tension significantly heightens as the narrator, who has committed murder, boldly welcomes the police into the home and hides the old man's body under the floorboards. The seating above the hidden body and the narrator's cool demeanor towards the investigators exacerbate the psychological conflict, ultimately leading to the narrator's confession, driven by the unbearable beating of the victim's heart he imagines hearing.
Another snippet seems to relate to another work of fiction where characters encounter assassins and experience a supernatural transition from a familiar room to a landscape of high mountains amidst a mighty storm, suggesting themes of fantasy and adventure. The character of Gil-Dong, who plays a flute and takes away the weapons from the assassins, appears to be a kind of hero in this narrative.
The excerpts provided are indicative of different facets of literature, including gothic horror, fantasy adventure, and psychological thriller, each employing different mechanisms to build their unique atmospheres and narratives.