TV Guide 5USA Saturday

Ex-FBI agent Tobias Fornell pleads with Gibbs to do whatever is necessary to take down drug dealers in the area after his daughter is hospitalised from an opiate overdose, leaving Gibbs feeling haunted by aspects of the case. Mark Harmon stars

Agents G Callen and Sam Hanna investigate after a naval officer is killed during an LAPD shootout, with two other men who died in the gun battle being identified as members of a Mexican drug cartel. Spin-off drama following the exploits of the Los Angeles-based Office of Special Projects, an elite NCIS division specialising in undercover assignments. Chris O'Donnell and LL Cool J star

Three men stage a raid on a drug deal, taking a suitcase full of cash and killing the dealer and an undercover LAPD officer. While studying footage taken from CCTV equipment in the house, Sam recognises the distinctive hand signals of one of the suspects as being those of Navy Seal Kurt Holgate, who he served with in Bosnia. Eric studies the details of his unit and finds that a man called Jackson has been unaccounted for since the day of the attack. Drama, starring LL Cool J

On a live-fire air force training exercise, someone hacks into the control systems of a drone and fires one of its two live missiles, striking and killing a serviceman, before piloting it away. Sam and Callen meet with a member of the National Security Agency, while Eric's inquiries lead him to a group of students on an advanced computer science course and Kensi is sent under cover to pose as its guest speaker

A man who stole a car and ran down and killed one of his pursuers before escaping is identified as Walton Flynn, an ex-marine now working for a private security firm in Iraq. Sam and Callen learn that the businessman he had been hired to protect had been murdered and that the people chasing him were hired by his employers to dish out their own form of justice. Crime drama, starring Chris O'Donnell and LL Cool J

A jet-skier crashes on to the shore and is discovered to be dead, having been shot through the chest. At HQ, Hetty shows the team surveillance footage of the shooting and identifies the victim as Daniel Su, an engineer who defected from North Korea and was working for the US government on a highly classified research project. Sam and Callen visit the victim's apartment, where they find the body of a woman on the floor

Marine Brandon Valdivia falls to his death from a rooftop bar and is initially thought to have committed suicide, but his family refuse to accept that possibility and persuade a congressman to put some pressure on the admiral. Sam and Callen are then brought in to re-evaluate the case and discover that Valdivia may have been involved in money laundering with a fellow marine.

An explosion at a mausoleum exposes a number of freshly dismembered bodies, prompting the team to launch a multiple murder investigation to identify the victims. Meanwhile, Abby has a personal problem to deal with - and it seems Gibbs is the only person she will confide in. Drama, starring Pauley Perrette and Mark Harmon

A supposedly dead marine suddenly regains consciousness on the autopsy table, leaving the team struggling to solve the mystery of how he came to be in such a strange predicament. Investigations reveal he had recently been on a trip to Baghdad - and uncover an unexpected link to Gibbs' past. Drama, starring Mark Harmon