Who was trying to take Callen down?
That was the big question on NCIS: Los Angeles Season 9 Episode 5 when it became apparent that someone was targeting his aliases.
Mosley worried that it was the start of something bigger and that he should probably take some precautions.
Meanwhile, Sam went undercover as a day trader when a well-known investment banker with ties to a Russian oligarch is murdered.
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Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.