10 dramas or movies where it seems one of the leads is betraying the other but they are actually helping/working on behalf of the other. It doesn't matter if the other lead knows it at the time or not but I'd appreciate if they did by the end. Remember spoiler alerts.
If it gets to 15+ hours with less than 5 answers I'm happy to take supporting actors as the supposed betrayer.
1. Suits - at least that is how it appeared to me. The young ML appeared to move to the other camp (so-to-speak) and work for them instead of the experienced ML.