Red John is a CBI agent/officer. Homeland security knows it, that's why they are investigating.
Also, in the last episode (s05e16 "There will be blood"), Bertram and Kirkland assume they "can't trust anyone"... and they are in the CBI office.
Red John is a CBI agent/officer. Homeland security knows it, that's why they are investigating.
Also, in the last episode (s05e16 "There will be blood"), Bertram and Kirkland assume they "can't trust anyone"... and they are in the CBI office.