When the BAU goes to San Jose to investigate a string of murders, Garcia delves into her hacker past and reconnects with her old flame to help the team with the case.
Gibbs and McGee head to Alaska while the team works at home to uncover the conspiracy behind the serial killer.
Special Agent Alden Parker is still on the run with his ex-wife Vivian, so the team investigates who from his past might have a personal vendetta against him in hopes of clearing Parker's name.
When Agent Parker is framed for murder, the team puts their jobs and lives on the line in order to buy time and uncover the truth, on the 19th season finale.
Mal unwittingly marries a beautiful village girl during a job in the backwater.
