“Blood in the Water” – As the NCIS team searches for Gibbs after wreckage from his boat is discovered, they find out that he had been tracking a serial killer with the journalist, Marcie Warren (Pam Dawber) who had done an exposé on him, on the 19th season premiere of NCIS, Monday, Sept. 20 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Pictured: Sean Murray as NCIS Special Agent Timothy McGee, Katrina Law as NCIS Special Agent Jessica Knight , Wilmer Valderrama as NCIS Special Agent Nicholas “Nick” Torres. Photo: Sonja Flemming/CBS ©2021 CBS Broadcasting, Inc. All Rights Reserved.

“IRL” â€" The NCIS team investigates a petty officer's murder that was live-streamed on a popular gaming app. Also, Gibbs watches his 11-year-old neighbor, Phineas (Jack Fisher), when his mom must leave on a last-minute trip, on NCIS, Tuesday, Nov. 26 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: Mark Harmon as NCIS Special Agent Leroy Jethro Gibbs, Jack Fisher as Phineas. Photo: Patrick McElhenney/CBS ©2019 CBS Broadcasting, Inc. All Rights Reserved.