Who's the killer? [One-Shot]

This is a work of fiction. Names, characters, businesses, places, events and incidents are either the product of author's imagination or used in fictitious manner. Any resmblance to actual person, living or dead, actual events is purely coincidental.

Ps: I'm a Beginner, i'm not an expert.

Plagiarism is a crime.

WARNING: PLEASE READ CAREFULLY SO YOU CAN UNDERSTAND THE WHOLE STORY. DON'T SKIP.

Inferno