u/EmuAcceptable8194

So I've been looking at buying the collection of the 4 campaigns, specifically for a larger story about the king in yellow. I know there is the standalone city of mirrors but from what I've read there is lore spread out between the other books too. So my main question; is there a connected version between all 4 books? When I look at each one they have overlapping level requirements so it's not like they can be connected by ending one story and starting anew. Like the All father's ink ends at 15 however the city of mirrors starts at 13.