The return of Delilah McGee to the NCIS cast takes place during the 2021 winter premiere.
Delilah is slated to appear in the first two new episodes for Season 18, bringing actress Margo Harshman back to the show for the first time in a few years.
Delilah Fielding McGee is a Department of Defense employee and mother to Morgan and John McGee II. She is also married to NCIS Special Agent Timothy McGee and used to be on episodes of the show more frequently.
The first time that the character was mentioned was during the Season 10 episode Damned If You Do. She then appeared in-person for the first time during the episode called Whiskey Tango Foxtrot.
