Callen has been sleeping less than his usual few hours due to an old dream that's returned. He's losing weight, looking gaunt and become edgy. His nightmare enters his day when a case involves two people from his past. Russians have returned to kill him, but he has no idea who they are. He needs to open up to Nate and trust an old friend to find out why and who they are.

A death of a petty officer onboard USS Arlington involve Gibbs' team and discover NCIS agents undercover. Vance reads the team in on Operation Formosa, the Colombian Cartel who killed Agent Greg Smith and his daughter. When Agent Nassir returns home, the LA team work against the clock to find him and his wife who've been kidnapped. Sequel to Lost Too Much.

An NCIS Agent goes missing in Donetsk, Ukraine. When an old case returns to the Los Angeles team, Callen is less than impressed when Granger tells him that Vance needs him in D.C. and cannot help his team on this current case. Callen teams up with Gibbs on a rescue mission that turns his life upside down. Sam and Hetty become frustrated as time goes on with no Callen.

A woman is being hunted but she has no idea by whom. She's on the run and after eight years of living happily with a family of winemakers and a former marine, her past has caught up to her. The team is brought into finding the marine and his sons after gunfire is reported from his property. But who the woman is and who is after her will lead the team into a fight for their lives.

Savannah series part 1 — There's a mystery woman in town whose caught Callen's attention due to the grief that he sees in her eyes. Why is Granger tracking her? A series of events from the past will come out that affect not only this woman, but some members of the team, that will shock the rest of them.

When the death of an employee of a pharmaceutical company leads to a major threat of National Security, the team and Callen in particular, are stretched to the limits from turn of events that change everything about this case. OC from Callen's past brings far more than he envisaged in solving this case. Secrets and lies will be revealed. Involves whole team.

Ava series part 3 — Callen is recovering away from his family and team. Janvier remains on the loose as the team try to gain information to his where abouts. Things are changing in Half Moon Bay while Callen remains away. Will Callen be ready when Janvier comes? Will his team be able to find Janiver in time? Involves whole team.

G Callen had tried to convince his partner Sam Hanna that he was really an illusionist. But not just for an alias. The truth was, that he was an illusionist every day of his life. Sam knows something is up with his partner and worries that he's going lone wolf again. Why is Callen hiding this big secret? How will Sam react when he finds out?

Ava series part 2 — Set fifteen months on, the Walker family settle into their new life with their new identities. Gibbs discovers a stranger in town whose a threat to his family. As he tries to contact Callen, Sam and Callen go off grid. Sidorov has returned to Los Angeles, causing grief for all the team.