The Return of the King is the final and perhaps the best book in the Lord of the Rings trilogy by JRR Tolkien. The men of Gondor and Rohan make a final stand against the Orc army of Sauron at Minas Tirith (the major city of Gondor). Aragorn summons an army of ghosts from ancient Gondor. You almost feel like your on the battlefield at Minas Tirith. I sensed the noises and was entranced as I read about the conflict. I was very moved by the deaths of some notable characters (don't want to spoil things entirely) and found the experience to be quite emotion invoking. It's not often that I feel such a link to fictional characters. The realness that Tolkien's characters embody is really quite unique in my opinion.
Frodo, Sam and Gollum make it to Mordor, you'll have to read for yourself to find out what fate the ring and its carrier reach. The story gets better and better the further you read. This third book in the series is incredible in its imagery and descriptions. Dialogue and songs in languages created by Tolkien are included with translations throughout. Poetry, sung by characters, is also included.
Tolkien has left his mark on the world in the form of an absolute masterpiece. If you haven't read these books, you've deprived yourself. Indulge and be happy!!