Christine Garver

The team must recover stealth technology from a military plane that was shot down in Bosnia. Meanwhile, Walter's sister visits with Sylvester at the garage.

A series of murders in San Francisco bearing the tell-tale signs of the infamous Zodiac Killer have the BAU wondering if the notorious serial killer has returned. Meanwhile, Reid ponders if he should be doing more with his genius abilities.

When a fabricated video makes it look like Elizabeth and Henry are making fun of a foreign dignitary, they struggle to convince him not to pull out of an important international agreement; Stevie says goodbye to an important person in her life.

Elizabeth runs into trouble while in Libya for negotiations, when a car accident leaves a girl severely wounded. She tries desperately to find medical care for the girl.

Henry attempts to convince a Russian spy to help the US, Elizabeth realises the Afghan government may want to strike a deal with the Taliban, and Daisy decides to tell Joe's mother about the baby after returning from maternity leave.

While investigating the murder of a seaman who was set to testify before a grand jury, the team uncovers the resurgence of an international human-trafficking ring.