When did NCIS Season 20 Episode 21 air?
NCIS Season 20 Episode 21 aired on May 15, 2023 at 9 PM ET.


Back in force.
From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has any connection to Navy and Marine Corps personnel, regardless of rank or position.

When a suspicious murder occurs in the classified section of the National Archive, NCIS must investigate a string of Russian spy encounters that may be linked to the crime.
Direct answers for episode-level questions and details.
NCIS Season 20 Episode 21 aired on May 15, 2023 at 9 PM ET.
This episode runs for approximately 45 minutes.
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