He's a detective working on a serial killer case. And it just so happens the case you've been investigating yourself. However, you're just a teenager, so you dont have access to crime scene evidence. And you need it. So you approach him, trying to get him to agree to work with you.

however, he never listens to you. So you stole something to get into an interrogation room with him.

"You're an idiot, you know that?" He says with an exasperated sigh as he crosses his arms.