The Seeker is a 2007 American family drama-fantasy film, a very loose film adaptation of the children's fantasy novel The Dark Is Rising (1973) by Susan Cooper. The film is directed by David L. Cunningham and stars Ian McShane, Alexander Ludwig, Frances Conroy, Gregory Smith, and Christopher Eccleston as the Rider. The film centers on Will Stanton (Ludwig), when on his 14th birthday, he finds out that he is the last of a group of warriors – The Light – who have spent their lives fighting against evil – The Dark. Will travels through time to track down the signs that will enable him to confront the evil forces. The Dark is personified by The Rider (Eccleston).

Susan Mary Cooper is an English author of children's books. She is best known for The Dark Is Rising, a contemporary fantasy series set in England and Wales, which incorporates British mythology such as the Arthurian legends and Welsh folk heroes. For that work, in 2012 she won the lifetime Margaret A. Edwards Award from the American Library Association, recognizing her contribution to writing for teens. In the 1970s two of the five novels were named the year's best English-language book with an "authentic Welsh background" by the Welsh Books Council. In 2024, the Science Fiction and Fantasy Writers Association named her the 40th Damon Knight Memorial Grand Master in recognition of her significant contributions to the literature of science fiction and fantasy.