The Lord of the Rings films, adapted by Peter Jackson from the books of the same name, are some of the most famous works of J.R.R.Tolkien. The books, permeated with all manner of remarkable creatures, from Barrow- Wights to Nazgul, to elves, dwarves and hobbits, introduce us to a rich and diverse world full of wonders. But how do these creatures, arguably most notably of all the elves, change between the books and films?