Sea of Silver Light is a science fiction novel by American writer Tad Williams, the fourth and final book in his Otherland series. It was published in 2001 with a paperback release in 2002.Green, Roland. "River of Blue Fire." Booklist, vol. 94, no. 18, 15 May 1998, p. 1566. Gale Academic OneFile, Accessed 19 February 2026.

It concludes the saga begun in City of Golden Shadow, taking the characters through a world being born around them as they face off against Dread and the being known as the Other.

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