text: "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. Photo: Erik Voake/CBS ©2019 CBS Broadcasting, Inc. All Rights Reserved