Cartoon tale is darker, more complex than others in series.
Parents need to know that this is not to be confused with Peter Jackson's live-action The Lord of the Rings: The Return of the King. The cartoon adaptation of J.R.R. Tolkien's Return of the King may baffle those who are not readers of the entire Lord of the Rings trilogy (not to mention the earlier book, The Hobbit). It picks up after a cliffhanger ending in Tolkien's book The Two Towers. There is non-explicit violence that kills good-guy characters as well as evil ones. A human character, believing that defeat is inevitable, has his soldiers kill him (though nothing explicit is shown). The hobbit Frodo is whipped.