As the members of team Scorpion try to save lost hikers, their helicopter crashes, igniting a large wildfire and injuring the pilot.
The team must facilitate peace discussions when a conflict in Eastern Europe threatens to escalate into World War III.
The members of the team travel to Mexico when the daughter of a tech billionaire is abducted Walter participates in an interview that leads to hurt feelings.
When a petty officer is found dead, the team's participation in the annual Red Dress Run comes to a halt.
When an Australian Royal Navy Lieutenant is murdered in New Orleans, Special Agent Naomi Parsons (Kate Beahan) is sent to work with Special Agent Pride.
Baitfish murders a person close to the team in order to send a message to Pride a citywide hunt for the elusive criminal takes place.
Lasalle's brother, Cade, needs the team's help when he becomes a murder suspect -- and cannot remember what happened Lasalle is determined to prove Cade's innocence, despite the wealth of evidence against him.
When a Navy commander's car is stolen with his baby inside, the team must determine if it was a targeted abduction.
During the autopsy of a petty officer who seems to have died of natural causes, an armed man holds Wade, Sebastian and Danny hostage in the morgue.
When a sailor is killed in a strip club, the murder weapon turns out to be linked to other unsolved cases Brody receives a visit from her ex-fiance.
Pride believes Baitfish has returned and has the NCIS team chase down leads in an attempt to locate him.
The NCIS team tries to narrow down the motive when a Navy recruiter is murdered in a hit-and-run Lasalle worries about his brother.
A retired SEAL -- who tracked people impersonating military personnel -- is murdered Brody finds that LaSalle is uncharacteristically unenthusiastic about Christmas.
The team members go under cover on a cruise ship in order to locate and disable stolen rockets as Valentine's Day approaches, Ralph develops a crush.
The team must help an injured former Secret Service agent regain his memory in order to stop the launching of weapons of mass destruction.
The team searches for a CIA mole who has been coerced into stealing deadly chemicals Paige shows Walter how to flirt.
The team tries to help Ralph when he is taken by the FBI for questioning after his web game play unintentionally reveals a CIA safe house's location.
Chin is questioned about his father's murder and how his relationship with Malia and her family could have adversely affected the investigation.
One of Grover's friends disappears after apparently committing a murder.
When a zombielike man is shot, the team members are led to a madman who is performing experiments on humans.