Mother's Day is the sixteenth episode in the Season Seven of NCIS and the 154th of the series as a whole.
A naval officer's death has the team joining forces with the Metro Police Detective to find out who's responsible. Gibbs is left stunned when one of the witnesses turns out to be his former mother-in-law which forces Gibbs to confront his painful past.
In the bullpen, Tony asks McGee what he has.
McGee states that from what he's gathered, Gibbs and Joann Fielding are very estranged.
Ziva tells them that Fielding lost her daughter and her granddaughter with her fiance later dying in Fielding's arms and now her former son-in-law is investigating before telling McGee to show some sympathy.
- Detective Philip McCadden is introduced for the first time.
- McGee, DiNozzo and Ziva meet Palmer's girlfriend, Breena Slater for the first time.
- Gibbs reveals that he doesn't like stuffed animals.
- It's also shown that Gibbs's right arm has fully healed from being broken in Jet Lag (episode).
- Gena Rowlands who plays Joann Fielding is credited as a Special Guest Star.
|Leroy Jethro Gibbs||Mark Harmon||Special Agent in charge of the Major Case Response Team, NCIS.|
|Anthony DiNozzo||Michael Weatherly||Senior Special Agent, MCRT, NCIS.|
|Ziva David||Cote de Pablo||Former Mossad Liaison Officer to NCIS MCRT. Now Probationary Special Agent on the MCRT.|
|Timothy McGee||Sean Murray||Special Agent, MCRT, NCIS.|
|Abigail Sciuto||Pauley Perrette||Chief Forensic Specialist, NCIS.|
|Donald Mallard||David McCallum||Chief Medical Examiner, NCIS.|
|Leon Vance||Rocky Carroll||Director of NCIS.|
|James Palmer||Brian Dietzen||Assistant Medical Examiner.|
|Margaret Allison Hart||Rena Sofer||Attorney.|
|Young Shannon Gibbs||Aviva||Gibbs's first wife who was murdered by a sniper connected to the Reynosa Cartel. Previously appeared in the episode "Heartland".|
|Joann Fielding||Gena Rowlands||Gibbs's former Mother-in-Law who killed her own fiance Captain Joseph Norton in revenge for her daughter and granddaughter dying.|
|Detective Philip McCadden||Adam Kaufman||Homicide Detective.|
|Lieutenant David Shankton, USN||Bryce Johnson||Naval Officer.|
|Breena Slater||Michelle Pierce||Jimmy Palmer's girlfriend who works as an embalmer at a local mortuary.|
|Young Joann Fielding||Leann Hunley||Joann Fielding when she was middle aged.|
|Young Leroy Jethro Gibbs, USMC||Sean Harmon||Gibbs when he was a teenager. In real life, Sean Harmon is Mark Harmon's son.|
|Neil||Eric Tiede||A father who witnesses the aftermath of Captain Norton's shooting.|
|Melanie||Blythe Auffarth||A mother who witnesses the aftermath of Captain Norton's shooting.|