Watch NCIS: Los Angeles Online: Season 13 Episode 21

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Did Callen make the biggest mistake of his career?

On NCIS: Los Angeles Season 13 Episode 21, the team had to quickly find him when he fell for Katya's trap.

Deep-Fake Trap - NCIS: Los Angeles Season 13 Episode 21

As Sam's deep fake returned, a coordinated weapons deal left the fate of everyone up in the air.

Things took an even more dangerous turn when Anna returned with the aim of helping.

Use the video above to watch NCIS: Los Angeles online right here via TV Fanatic.

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NCIS: Los Angeles Season 13 Episode 21 Quotes

What, no "Hello." "How are you?" "How do you like my new face?"

Callen [to Katya]

Don't you think it's funny that you and I are in love with the same woman?

Katya [to Callen]