The NCIS team searches for a suspect and their motive following the bombing of a large facility where military combat drones are assembled. Callen and Kilbride get troubling news about a body found in Syria.
After an architect duo who specializes in designing secure buildings is kidnapped, the NCIS team mounts a search to bring them home. Also, Deeks and Kensi realize they may need to get Rosa some help with her schoolwork.
NCIS team join forces with the FBI when a group of grisly murderers known as "The Body Stitchers" returns after evading capture by NCIS years ago. Sam's dad makes a new friend in Arkady.
Aiden Hanna's plane crashes and he is accused of being at fault for the accident, the NCIS team must investigate to clear his name. Rountree considers how he wants to handle the aftermath of the incident with the LAPD and Sam finds a new caretaker for his father.
NCIS is called to investigate when a woman is seen fleeing the scene of her husband's murder. Roberta Deeks comes into town to meet Rosa, and Sam looks for another aide for his father.
NCIS is called to investigate after Rear Admiral Ted Gordon is abducted from his home. Kensi struggles with being the fun parent while Deeks is apartment hunting with his mom.
A Marine falls ill during a training mission due to an attack by a genetic weapon, the NCIS must track down the person responsible for unleashing it. Deeks struggles with balancing work and home life when Rosa comes down with the flu.
NCIS investigates an arson attack at Global West Ventures Corp, a naval defense contractor. Rountree connects with an ex and Kilbride gives Callen files on Pembrook.
While Agent Rountree and Fatima search for Kilbride, who has been missing, they are ambushed and learn that every member of the team has a $200,000 bounty on their head.
A former Navy SEAL turned best-selling author, is attacked by terrorists in Utah. Fatima and Kensi team up with a DOJ agent and a CIA agent (temporary Special Deputy Marshal) to save the Day.
The NCIS team must quickly find Kensi and Fatima after they are kidnapped and drugged while searching for a missing Navy lieutenant who they learn has ties to a dangerous Islamic militia.
A mystery woman attacks the founder of an AI company, the team must identify the woman before the next major global conflict ensues. Kilbride's ex-wife, Elizabeth comes to ask him to think about reconnecting with their son.
When a petty officer is found dead with an apparent suicide note, the NCIS team must investigate the mystery surrounding his death. Also, Callen and Anna begin wedding planning and Sam has a heart to heart with his daughter.
When NCIS receives a message, Fatima and Devin work together to solve the case. Kilbride plans to visit his son, and Callen asks Sam an important question.
NCIS OSP is tasked with assisting NCIS' cold case homicide unit with a case from 2003 and a missing Navy petty officer. Kilbride and his son, Alex, work to rebuild their relationship.
The NCIS team must investigate when a Navy reservist is stabbed and his lab full of pesticides and insects is ransacked; Kilbride offers Sam the interim operations manager position - [S14 Ep18]
When four people, including a CIA officer, are shot and killed in broad daylight, the NCIS team suspects the attacks have something to do with DRONA. Also, Pembrook meets with Callen and gives more insight into his past.
When an ATF agent goes missing, the bureau seeks help from the NCIS team to investigate stolen military-grade weapons and locate the agent; Callen and Anna continue to plan their wedding; Rountree's sister interviews for medical school.