Here are the spoiler photos of The Mentalist season 4 episode 23 entitled “Red Rover, Red Rover.”
Red Rover refers to a childhood game in which two sides line up and differnt people within each line are called to the opposing side. If they break chain they stay on their current team, if not, the person called over is to join the opposing line which called him/her. This could be foreshadowing to some sort of betrayl of either a red john accomplice or of a CBI agent joining red johns forces or revealing important information.
Episode 23 will air on May 10.
You can check The Mentalist Season 4 Reviews and Spoilers HERE.