The CBI team heads out to a run-down Wild West tourist town when the owner is found dead. Meanwhile, Kirkland tries to find out how much Patrick knows about Red John.
As NCIS investigates the cause of death of a reservist Navy SEAL surgeon, they're forced to bring Vance's daughter to help with a highly dangerous mission.
The team get caught in an ambush and it can only mean one thing: that someone on the inside is leaking intel to the cartel.
Mandy and Jason head undercover at a fancy nightclub. Their mission is to track one of Andre Doza's cartel members. But can they keep their cover?
In the shocking, action-packed season finale, Veronica solves the mystery of who murdered her best friend, Lilly Kane--but she betrays someone she cares deeply about in the process.