User blog:KillRoy231/Gaines telling Jack to kill Nina

(Spoilers if you haven't seen the end of Season 1, but I'm sure most people here have)

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Did Gaines know whose side Nina was really on? Had the writers decided it at the time? If not, they did such a great job at hiding Nina's true allegiance throughout the first 20 or so episodes, even using her as a "red herring" at the beginning.