Note: For the purposes of this assignment, you are asked to develop a murder case scenario of your own choosing. 

Imagine that you were the lead investigator in a murder case that has just wrapped up with a conviction. You have been asked to compose an essay in which you describe the various tasks that were performed in order to achieve the perpetrator’s conviction. 

You will begin your essay by first describing the crime itself and then the events that occurred at the crime scene. First, describe the responsibilities of law enforcement officers when they arrive at a crime scene. Next, discuss the steps that were involved in processing the crime scene. Finally, explain how any primary and secondary witnesses were identified and interviewed, and explain the differences between the two. 

Following this, you will discuss how the case was presented in court. First, you will identify the steps that took place during the courtroom trial process. Then, explain how the courtroom process can be considered adversarial and the roles that lay and expert witnesses played in the court case. Finally, you will identify the guidelines that your witnesses followed when they were giving their testimony in court in order to ensure the conviction. 

Your essay must be at least two pages in length, and all sources used to compose this essay should be cited and referenced properly using APA style. You should use at least two sources, one of which can be your textbook (Brandl, S. G. (2019). Criminal investigation (4th ed.). Thousand Oaks, CA: SAGE Publications, Inc.).