S15·E21 One Step Forward

Episode recap

Task: Write a 280-380 word episode recap for NCIS S15E21 (One Step Forward).
Constraint 1: Use ONLY verifiable facts from the provided SYNOPSIS and SOURCES.
Constraint 2: Do not invent/guess titles, names, dates, etc.
Constraint 3: If details are missing, omit them.
Constraint 4: Write original, neutral, encyclopedic prose in plain text.
Constraint 5: No markdown, no asterisks, no headings, no bullet points.
Constraint 6: Word count target: 280-380 words.
SYNOPSIS: "Sara Carter begs Gibbs to investigate her mother's murder - she believes the wrong man was convicted."
SOURCE [1]: NCIS (2003) is a TV-14 Crime, Drama, and Action & Adventure series.
SOURCE [2/3]: Created by Donald P. Bellisario and Don McGill. Stars Sean Murray, David McCallum, Mark Harmon, Brian Dietzen. Follows the Major Case Response Team of the NCIS investigating criminal cases connected to the US Navy and Marines Corps personnel and their families.
SOURCE [4]: Originated as two back-door pilot episodes of JAG in April 2003.
SOURCE [5]: Sean Murray and Brian Dietzen were recurring characters in the first season before becoming series regulars. Rocky Carroll joined in Season 5.
Episode Title: One Step Forward (from prompt).
Episode Number: S15E21 (from prompt).
Plot: Sara Carter asks Gibbs to investigate her mother's murder because she thinks the wrong person was convicted.
Series Context: NCIS is a crime, drama, and action and adventure series created by Donald P. Bellisario and Don McGill. The show follows the Major Case Response Team of the NCIS as they investigate criminal cases connected to the US Navy and Marines Corps personnel and their families.
The synopsis is extremely brief: "Sara Carter begs Gibbs to investigate her mother's murder - she believes the wrong man was convicted."
The sources provide series-level information but almost no episode-specific information beyond the synopsis.
Problem: The word count requirement is 280-380 words. The available facts are insufficient to reach 280 words without violating the "never invent or guess" and "omit rather than guess" rules.
If I write only what is provided:
"In the NCIS episode titled One Step Forward, Sara Carter asks Gibbs to investigate the murder of her mother. Carter believes that the wrong man was convicted for the crime. NCIS is a crime, drama, and action and adventure series created by Donald P. Bellisario and Don McGill. The series follows the Major Case