A Storm of Swords (A Song of Ice and Fire, Book 3) by George R. R. Martin
George R.R. Martin is the globally bestselling author of many fine novels, including A Game of Thrones, A Clash of Kings, A Storm of Swords, A Feast for Crows, and A Dance with Dragons, which together make up the series A Song of Ice and Fire, on which HBO based the world's most-watched television series, Game of Thrones.
A Storm of Swords continues the story where A Clash of Kings ended. The novel describes the increasingly vicious War of Five Kings in Westeros, Daenerys's strengthening forces in the East, and the oncoming threat of the Others, a ghostly army that is nearly invincible.