Book 4 of the wheel of time is pretty epic. there are a lot of things happening all over the place, i remember struggling to keep up with who was who and who was doing what, the scale of the story feels like is is almost out of the authors control. Luckily he does a grand job asserting his authority. I remember when I read this that i started writing notes, either cos I am dim or just OCD, who knows, but it helped.