The Mentalist, Season 5

Barlow:
Red John. Any punk killer who wants to fool with you can paint a smiley face on the wall. "Ooh, it's Red John"

Jane:
It was Red John.

Barlow:
Red John has your mind completely messed up. You see him every place you look. You think you're getting closer, but he is just playing with you.

Jane:
We'll see.

Barlow:
Has it never occurred to you to ask exactly how Red John is always one step ahead of you? How is it he seems to read your mind?

Jane:
You tell me.

Barlow:
Red John's got powers. Real psychic powers that you refuse to believe in. Teresa will hear what I'm saying, but you've no faith, so you're deaf to the truth. He's got powers. That's why he'll always defeat you.