"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