Christopher Tolkien, son of J. R. R. Tolkien, is releasing The Fall of Gondolin as a standalone novel this year. Tolkien left behind a vast archive of unpublished stories and poems after he died, according to Andrew Liptak writing for The Verge, and his son Christopher has been sorting through them and even editing and releasing some of his work posthumously. J.R.R. Tolkien once called his son his “chief critic and collaborator”.
The author later described The Fall of Gondolin as his “first real story” set in Middle Earth. He reportedly started writing it around 1916. He was fighting for England in World War I where he caught the “trench fever”, a typhus-like infection, due to which he was sent back to England in November 1916 to recover. He supposedly started work on The Fall of Gondolin then; he came back to the tale in the 1950s and planned to turn it into a novel in the style of The Lord of the Rings—but he never finished it. His novelized version cuts off abruptly once Tuor reaches Gondolin.