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NCIS S9E17 — Need to Know
7.6
NCIS•Season 9•Episode 17

Need to Know

7.6/10 · 764 votesFeb 28, 201241 min

Ranked #20 of 24 in Season 9•−0.3 vs season avg

Discussion

Top-secret clearance from a Naval research laboratory is jeopardized when the murder of a Chief Petty Officer is connected to an international arms dealer.

Directed byMichelle MacLaren
Written byFrank Cardea, George Schenck
Previous episodeE16 · Psych OutNext episodeE18 · The Tell
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Cast7

Mark Harmon

Mark Harmon

Leroy Jethro Gibbs

Sean Murray

Sean Murray

Timothy McGee

Michael Weatherly

Michael Weatherly

Tony DiNozzo

Cote De Pablo

Cote De Pablo

Ziva David

David McCallum

David McCallum

Dr. Donald 'Ducky' Mallard

Pauley Perrette

Pauley Perrette

Abby Sciuto

Rocky Carroll

Rocky Carroll

Leon Vance

Crew3

Frank Cardea

Frank Cardea

Writer

G

George Schenck

Writer

Michelle MacLaren

Michelle MacLaren

Director

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Episode Summary

"Need to Know" is episode 17 of NCIS season 9. It scored 7.6/10 from 764 votes, ranking #20 of 24 episodes this season (season average 7.9). Directed by Michelle MacLaren and written by Frank Cardea, George Schenck, it aired on February 28, 2012.

Next: E18 · The TellBest of Season 9