The second of two companion volumes which documents the later writing of The Silmarillion, Tolkien's epic tale of war.

In The War of the Jewels Christopher Tolkien takes up his account of the later history of The Silmarillion from the point where it was left in Morgoth's Ring. The story now returns to Middle-earth, and the ruinous conflict of the High Elves and the Men who were their allies with the power of the Dark Lord. With the publication in this book of all J.R.R. Tolkien's later narrative writing concerned with the last centuries of the First Age, the long history of The Silmarillion, from its beginning in The Book of Lost Tales, is completed; and the enigmatic state of the work at his death can be understood.

The book contains the full text of the Grey Annals, the primary record of The War of the Jewels, and a major story of Middle-earth now published for the first time: the tale of the disaster that overtook the forest people of Brethil when HÚrin the Steadfast came among them after his release from long years of captivity in Angband, the fortress of Morgoth.