I have a bit of a dilemma with my plot. In the third book, it will be revealed that someone is a mole. This isn't the dilemma by the way, it's just background information. This is the dilemma bit:
In the first book, the bad guys always seem to be one step ahead of the heroes. My MC suspects that there's a leak in the system allowing them to find out what the heroes are up to. Should I let him voice this? I know it's not ideal for books to finish with loose ends, as they are supposed to be able to stand alone - even when they are part of a series.
While I've been typing this, an answer seems to have popped up. I could have him voice the doubts, but have the boss tell him that he's being paranoid.
What do you think? A good solution? Or should I just play down the whole thing until the third book?