The Tower of the Swallow, published as The Tower of Swallows in the United States (Polish original title: Wieża Jaskółki) is the fourth novel in the Witcher Saga written by Polish fantasy writer Andrzej Sapkowski, first published in Poland in 1997. It is a sequel to the third Witcher novel Baptism of Fire (Chrzest ognia) and is followed by the final entry in the series, The Lady of the Lake (Pani Jeziora).
One day, old Vysogota finds a very badly injured girl in the swamp surrounding his retreat. He saves her life and she tells him her story... the story of Ciri and how she became a cruel killer meeting death at every step. Until she met her retribution - Leo Bonhart, who killed her fellow bandits and captured her.
Meanwhile, Geralt is on his way to find Druids who might know where Ciri is. But someone is determined that the witcher should not find her...
