Numbers stations' are hard-core spy stuff, dating all the way back to the first World War. The gist: you can create a radio station that broadcasts encoded messages to assets. Anyone can tune in and hear the full audio -- yet only listeners with a specific, disposable guide can decipher the actual contents. For a long time, this was just another curiosity of conflicts past. Yet as Ben, Matt and Noel discover in tonight's episode, numbers stations remain not just active -- but expanding. Join the guys as they attempt to get to the bottom of the newest station on the block: V32, an off-books numbers station broadcasting in Farsi... and not based in Iran.