"Out of the Darkness" - Ziva surprises Gibbs with a cryptic warning, prompting him to question why she remained underground for years while being presumed dead by family and friends, and what lead to her return, on the 17th season premiere of NCIS, Tuesday, Sept. 24 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Mark Harmon as Special Agent Leroy Jethro Gibbs, Cote de Pablo as Ziva David. Photo: Michael Yarish/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

"Out of the Darkness" - Ziva surprises Gibbs with a cryptic warning, prompting him to question why she remained underground for years while being presumed dead by family and friends, and what lead to her return, on the 17th season premiere of NCIS, Tuesday, Sept. 24 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Mark Harmon as Special Agent Leroy Jethro Gibbs, Cote de Pablo as Ziva David. Photo: Michael Yarish/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