Watch NCIS: Los Angeles Online: Season 13 Episode 20

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How did two men get blown up by their own explosives?

On NCIS: Los Angeles Season 13 Episode 20, the team pondered why their mission went wrong.

Missing Whistleblower - NCIS: Los Angeles Season 13 Episode 19

Meanwhile, Callen wanted to take the next step with Anna, but he struggled to communicate his feelings.

Elsewhere, Sam moved in with her father, Raymond, but a family secret threatened to tear them apart.

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 20 Quotes

Sam: What do you think?
Raymond: I think you need some furniture. I need a comfy chair.

Shyla: You're not grumpy, sir. You're just passionate.
Kilbride: Keep it up, Dahr. I'll be sending you back to Washington ... in a mailing tube.