It's kind of refreshing that Costner's character is not a traitor. They often are (see the first Mission Impossible)
...by the end of the film we’re not sure who the Shadow Recruit is? Ha! Interesting. I haven’t seen this one, and admittedly I prefer the less action-packed thrillers, where the action is in the office/dialogue and the tech equipment works. I just finished watching Operation Mincemeat on Netflix, starring Colin Firth, Matthew Macfayden and Kelly Macdonald. It has a very different tone from The Hunt for Red October but it was equally as masterful IMO. It’s subtle, beautiful, meaningful, and reminded me of pre-streaming movies in theaters. The humor was so great. Recommend it as a spy movie!