Which Tolkien book was published posthumously in 2007 as a complete version of a First Age tale?

The Children of Húrin was published posthumously in 2007 as a completed version of a First Age tale by J.R.R. Tolkien.

Christopher Tolkien edited the book from his father’s existing writings, combining prose versions and related material into a continuous narrative. It was published on 17 April 2007, with illustrations by Alan Lee. The story follows Túrin Turambar and his sister Nienor, whose lives are shaped by the curse laid on their father, Húrin.

The tale belongs to the First Age and is set mainly in Beleriand, long before the events of The Hobbit and The Lord of the Rings. It is one of Tolkien’s darker stories, dealing with fate, mistaken identity, war, and the consequences of Morgoth’s power.

The book was not newly invented by Christopher Tolkien. Its component texts had appeared in earlier posthumous collections, but the 2007 volume presented a single edited narrative for general readers.