William Warner Sleator III was born in Havre de Grace, Maryland on February 13, 1945, and moved to St. Louis, MO when he was three. He graduated from University City High School in 1963, from Harvard in 1967 with BAs in music and English. For more than thirty years, William Sleator thrilled readers with his inventive books. His House of Stairs was named one of the best novels of the twentieth century by the Young Adult Library Services Association. William Sleator died in early August 2011 at his home in Thailand.