Natalie Grant revealed who she was working for.
In the episode "Sirens," Sam, Callen, Deeks, and Hetty tracked down a contact of Carl's named Natalie Grant. Unfortunately, Natalie was gunned down before she could be taken in for questioning, but she did reveal the name of her employer: Rae, a.k.a. "Heather," the woman Granger spoke to at the bar in the Season 8 premiere.
The intrigue continues!
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