INTRODUCTION

June 9, 1980. 10:00 AM on a sunny day in Coyotcreeck. The residents of this town are far from imagining the tragedy that will unfold. The mayor's secretary called the city police station in a panic: 

Secretary: Um... hello, please come quickly, I... I don't know what's happening, I think the mayor has passed  away.

 Officer: WHAT, THE MAYOR IS DEAD!! Stay where you are, sir, don't touch anything, we'll send one of our teams. 

 A few minutes later, some police cars arrived there. The police chief, Mr. Peter, inspected the scene and called for the medical examiner.  The medical examiner arrived to examine the mayor's body. He conducted an autopsy to determine the cause of death. Meanwhile, the police officers beganquestioning witnesses and collecting evidence. And one of the officers came across a blood-stained letter. The police officer handed this letter to his chief. Upon their return to the police station, Mr. Peter finally decided to discover the contents of this letter.

So, upon finding the letter, Mr. Peter directly contacted the two rival inspectors, Pablo and Smith. Meanwhile, the medical examiner finally gave his verdict and announced that the mayor's death was not natural, but that he was indeed assassinated.

June 11, 1980, Inspector Smith arrived in Coyotcreeck. Upon arriving at the police station, he spotted one of his biggest rivals, Pablo, and refused to work with him. He decided to continue on his own.

November 9, 1980: Pablo and Smith continue to work on their own. Over the past few months, Pablo collected several clues, but Smith couldn't find anything at all. One day, while investigating old unsolved cases, Smith discovered that the mayor had killed a young child named Mateo Rossi in a car accident. However, the case was covered up by the mayor's numerous lawyers. Smith couldn't make the connection between Mateo's death and the mayor's, so he decided to search for more clues.