"Going Mobile" -- After the body of a Marine Lieutenant is found hidden under an 18-wheeler, the NCIS team tracks the vehicle's previous locations to pinpoint the crime scene and suspect. Also, Sloane encourages the team to sit down and talk about Ziva's recent reappearance, on NCIS, Tuesday, Oct. 8 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Emily Wickersham as NCIS Special Agent Eleanor "Ellie" Bishop, Wilmer Valderrama as NCIS Special Agent Nicholas "Nick" Torres, Mark Harmon as NCIS Special Agent Leroy Jethro Gibbs, Cliff Chamberlain as Peter Buck. Photo: Sonja Flemming/CBS ©2019 CBS Broadcasting, Inc. All Rights Reserved

"Into the Light" - With their lives in danger, Gibbs and Ziva's rogue investigation takes an unexpected turn when a possible terrorist plot is revealed, on NCIS, Tuesday, Oct. 1 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Cote de Pablo as Ziva David, Mark Harmon as Special Agent Leroy Jethro Gibbs. Photo: Cliff Lipson/CBS ©2019 CBS Broadcasting, Inc. All Rights Reserved

"Daughters" -- Former FBI Agent Tobias Fornell (Joe Spano) pleads with Gibbs to do whatever is necessary to take down drug dealers and suppliers in the area after his daughter, Emily Fornell (Juliette Angelo), is hospitalized from an opiate overdose. Gibbs is haunted by the personal aspects of the case and his history with vigilante justice, on the 16th season finale of NCIS, Tuesday, May 21 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Maria Bello as NCIS Special Agent Jacqueline "Jack" Sloane, Mark Harmon as Special Agent Leroy Jethro Gibbs, Joe Spano as Tobias C. Fornell. Photo: Sonja FlemmingCBS ©2019 CBS Broadcasting, Inc. All Rights Reserved

"Judge, Jury--¦" -- After entering cold case DNA into the system, Kasie solves a 30-year-old murder case, but a loophole in the legal system may set the suspect free. Also, McGee visits an elite technology company in Silicon Valley that is offering him a highly paid position, on NCIS, Tuesday, April 30 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Mark Harmon as NCIS Special Agent Leroy Jethro Gibbs, Cooper Huckabee as Navy Petty Officer First Class Kyle Larson. Photo: Erik Voake/CBS В©2019 CBS Broadcasting, Inc. All Rights Reserved

"Hail & Farewell" -- NCIS investigates the murder of a Marine Major believed to have been killed in the 9/11 attack on the Pentagon after human remains are discovered at a construction site. A personal history with the victim drives Gibbs to solve her crime, on NCIS, Tuesday, April 16 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Emily Wickersham, Mark Harmon. Photo: Sonja Flemming/CBS ©2019 CBS Broadcasting, Inc. All Rights Reserved

"Perennial" -- Following an active shooter lockdown at a naval hospital, the NCIS team searches for a suspect who fled the scene. Also, someone from Sloane's past was inside the hospital and is a key witness in the case, on NCIS, Tuesday, April 9 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Kate Hamilton as Faith Tolliver Photo: Sonja Flemming/CBS ©2019 CBS Broadcasting, Inc. All Rights Reserved

"Mona Lisa" -- Torres relies on his team's investigative skills after he wakes up on a dilapidated fishing boat, covered in blood and unable to remember the last 12 hours, on NCIS Tuesday, April 2 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Wilmer Valderrama. Photo: Sonja Flemming/CBS ©2019 CBS Broadcasting, Inc. All Rights Reserved

"Silent Service" -- Director Vance is notified by the Pentagon that the nuclear submarine Gibbs and Bishop are aboard to conduct a murder investigation has gone radio silent, on NCIS Tuesday, March 26 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Series star Rocky Carroll directed the episode. Pictured: Mark Harmon, Emily Wickersham. Photo: Ali Goldstein/CBS ©2019 CBS Broadcasting, Inc. All Rights Reserved

“Bears and Cubs” â€" Jimmy is torn between family and work after his father-in-law, Ed (Larry Miller), asks him to tamper with evidence from NCIS' current murder investigation. Also, Ed's poker buddy, Anthony DiNozzo, Sr. (Robert Wagner), offers to help with the case, on NCIS Tuesday, March 5 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Larry Miller as Ed Slater, Robert Wagner as Anthony DiNozzo, Sr, Brian Dietzen as Dr. Jimmy Palmer. Photo: Michael Yarish/CBS ©2019 CBS Broadcasting, Inc. All Rights Reserved

“Crossing the Line” â€" The NCIS team investigates a man overboard fatality from a Navy destroyer at sea. Also, Torres is frustrated with Vance's assignment to mentor three high school students, on NCIS, Tuesday, Feb. 26 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Mark Harmon, Sean Murray Photo: Cliff Lipson/CBS ©2019 CBS Broadcasting, Inc. All Rights Reserved

"Once Upon A Tim" -- McGee reluctantly visits his high school after the unique computer password he used as a teenager is linked to the murder of a department of defense contractor. The case escalates when an intruder breaks into McGee's home in an attempt to steal his archaic high school computer, on NCIS, Tuesday, Feb. 19 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Mark Harmon, Wilmer Valderrama. Photo: Cliff Lipson/CBS ©2019 CBS Broadcasting, Inc. All Rights Reserved

"She" -- After a malnourished and confused 9-year-old is found hiding in a storage unit, NCIS reopens an old missing persons case when the girl is believed to be the daughter of a Navy recruit who disappeared 10 years ago. Also, Bishop discovers notes that Special Agent Ziva David kept on the case long after NCIS officially stopped investigating, on NCIS, Tuesday, Feb. 12 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Diona Reasonover, Emily Wickersham. Photo: Monty Brinton/CBS ©2019 CBS Broadcasting, Inc. All Rights Reserved

"The Last Link" -- An old family friend, Army Corporal John Sydney (Dabney Coleman), beseeches Gibbs to join him on a road trip to search for a missing military I.D. bracelet. Also, a Navy Lieutenant in NCIS protective custody is poisoned by an infamous drug dealer, on NCIS Tuesday, Jan. 15 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Mark Harmon, Dabney Coleman. Photo: Sonja Flemming/CBS ©2018 CBS Broadcasting, Inc. All Rights Reserved

"Toil and Trouble" -- United States Secretary of Defense Wynn Crawford (Mitch Pileggi) shuts down Gibbs' murder investigation and demands that Special Agents McGee and Torres be arrested for their actions in the case, on NCIS, Tuesday, Jan. 8 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Emily Wickersham, Mark Harmon. Photo: Sonja Flemming/CBS ©2018 CBS Broadcasting, Inc. All Rights Reserved

"What Child Is This?" -- The team's holiday plans are put on hold when the murder investigation of a Navy veteran includes the discovery of a newborn baby who has no identification and no apparent ties to a family, on NCIS, Tuesday, Dec. 11 (8:00-9:00 PM, ET/PT) on the CBS Television Network. . Pictured: Sean Murray, Emily Wickersham, Wilmer Valderrama. Photo: Michael Yarish/CBS ©2018 CBS Broadcasting, Inc. All Rights Reserved