With very little evidence, Jane and the CBI investigate the death of a mob boss’ son. Meanwhile, while taking an eyewitness in for questioning, Van Pelt is haunted by the memories of O’Laughlin’s shooting.

The CBI team investigates the murder of a real estate agent with former gang ties, while Jane searches for leads on his new connection to Red John.

Following the shocking events at Jane's house, the Red John list is narrowed down further, and the CBI's priority is the remaining suspects.