A Bit of Backstabbing

In "Checkmate" from "The Inside Man," Mark Shepherd and AJ catch Mark's handler having played *multiple* sides, no less than four, each for the same data and each believing that they were being offered it exclusively. Notably the Chinese are among the parties involved. But as AJ notes, it's surely no big deal. After all, it's just a bit of backstabbing between thieves.

Example of:
Playing Both Sides