William Warner Sleator III (February 13, 1945 – August 3, 2011), known as
William Sleator, was an American
science fiction author who wrote primarily
young adult novels but also wrote for younger readers. His books typically deal with adolescents coming across a peculiar phenomenon related to an element of theoretical science, then trying to deal with the situation. The theme of
family relationships, especially between siblings, is frequently intertwined with the science fiction plotline.