The search for a serial killer hits close to home for Jane when he encounters a blogger who has devoted his life to finding the killer.

Jane and the CBI team narrow down the long list of suspects after a high-end divorce attorney, with many enemies, is killed on his speed boat. Meanwhile, Jane is questioned by Agent Darcy about whether Red John was responsible for Panzer's murder.

Jane and the CBI narrow down the list of suspects after a disgraced clothing designer on the verge of a comeback becomes a fashion victim. Meanwhile, FBI Agent Darcy continues her investigation into finding Red John.

Jane suspects that Agent Susan Darcy has ulterior motives when she asks for his help with a homicide investigation. Meanwhile, the CBI team handles the murder of a young woman who was killed after meeting someone in an online chat room.

After another failed attempt to defeat Red John, Patrick Jane hits rock bottom, finds a lover and shoots one of his own.