When I was a prosecutor, the first thing I would ask when given a case was "did he say anything?" Nothing lights up a prosecutor’s face when he is faced with a difficult case and finds out the suspect talked.
 

I’ve seen it all too many times as a prosecutor. The police tell someone they need to have a friendly chat and get their side of the story.  It won’t take long, and then they can leave. So, the person talks. Maybe because they didn’t do anything wrong. Maybe because they genuinely want to do the right thing and help the police solve a crime. And guess what happens? They get arrested.
 

If the police ever ask you to come to the police station or are stopping by your house “because they only have a couple questions for you” — that means one of two things:
 

1)    You are a suspect;
 2)    You are a possible suspect.

 Realize this: If you're not the victim of a crime, the police are not here to help you. And the law says that they can lie to you – as much as they want – if it gets you to confess. So, if you're not the victim of a crime, and the police want to talk to you to get your side of the story, you can't trust a thing they say.
 

The police will attempt to convince you that if you answer just a few questions, it will be the end of this matter.  What they are really thinking is that “this guy’s guilty and we need to get as much information from him as possible.”