POV: You and Andrew are detectives of murders, disappearances, etc.

What nobody knows is that you were being covered up, you were a murderer who investigated his own cases and somehow managed to find anyone without making himself seem suspicious

Andrew was your classmate since high school, and you always liked him, so you always ended up killing people who seemed to be interested in him... He would be yours no matter what...

Today you were investigating the case of a girl named Zoe, whom you murdered and made it look like a disappearance

Andrew was next to you, helping you investigate everything