Hide certain game files?

So, this is kind of a weird question, but is there any way I can hide certain game files in a completed build? I have a few files that could potentially spoil some of the events going on in my game. I want it to be a surprise, so even if people decide to look through the game files, they won't find anything that could potentially ruin this. I have read a few things about people using persistantDataPath and external packages, but it's all very vague to me.