Carla Barnett

Red John's CBI informant is finally revealed and Patrick Jane comes face-to-face with the serial killer in an explosive confrontation that leads to shocking repercussions. Part 1 of 2.

Christian searches for immortality and Kimber reacts to the news of Liz and Christian getting married. Katee Sackhoff, Annalynne McCord and John Schneider guest star.

The fourth season premiere picks up where the third season finale ended. Martin and Danny attempt to dodge a hail of bullets as a mercenary and his cronies try to kill their true target, an FBI detainee whom the agents are transporting. Despite some quick thinking from Martin, who uses the car as a weapon against the shooters, and Danny, who manages to shoot one of the perpetrators, their prisoner is killed, and Martin is left gravely injured. Now, Jack, Samantha and Danny try not to let their concern for Martin hinder their efforts to hunt down the mercenary, which becomes more complicated once Martin's father, FBI Deputy Director VictorFitzgerald, and the Department of Homeland Security take active roles in the case. Meanwhile, Vivian's heart surgery appears to have been a success.

Joe and the men plan on a wild bachelor party in Atlantic City, while Helen decides to spend a quiet evening at home.