There isn't really any actual time travel, short of some cryogenic freezing type things, but yes, the timelines can get confusing. I tend to mention very small things in the "earlier" books, which turn out to be very big in the "later" books. ^_^

Almost as much fun as my more frustrating fanfics. Do you have any idea how hard it is to write Uther singing lullabies with Nimueh and not make it come out cracky?!?!?!