Isn't that Tina, from Closers (the character wearing the uniform, I mean)? If not then the similarity between them is uncanny.

EDIT: I just checked it on the source, it's indeed her.

I'd say it is actually Buck instead of Frost, judging by the weapon, and the skeleton key on it, even the commentary mentions Buck.

Bodraj said:

I'd say it is actually Buck instead of Frost, judging by the weapon, and the skeleton key on it, even the commentary mentions Buck.

It's Buck. Changing tag.