@ianthealy I'm using Aeon Timeline for my multi-series story arc. It's a Timeline, but also allows you to assign characters to scenes, track story arcs (and anything else you want to create an arc for), but it also has this cool feature that lets you see how things interconnect, including characters. It looks a lot like a subway map. Not sure if that's useful for you or quite what you're looking for, but you might check it out.