The Mentalist Episode 4.04 Ring around the Rosie

While working security at a political rally, Jane notices a suspicious looking man carrying a gun. The CBI brings him in, but they can't charge him with anything - he's no criminal, just a gun-loving lawyer with a concealed weapon permit. Jane, however, is convinced that the man is a psychopath teetering on the brink. Luther Wainright, their new department head, tells Jane that he's got 24 hours to prove his hunch is correct. Meanwhile, Lisbon leads an investigation into the death of a photographer at the same rally. When a homeless man confesses to the crime, the case seems open and shut. But Lisbon has reason to believe that the accused man, a down-and-out blues singer, is actually innocent.