
Isaac is the new kid in town. His mother, Vera, is in the hospital with a mysterious illness, and the only person left to care for Isaac is his distant grandfather. Friendless and often alone, Isaac loses himself in his collection of optical illusions, including a strange mirror box that he finds in his new house, left behind by the previous tenants. Designed for amputees, it creates the illusion of a second limb. Lonely Isaac wishes someone would reach out to him, and then someone does—a phantom limb within the mirror box! It signs to Isaac about a growing danger: someone who has murdered before and is out to get Vera next. The only way Isaac can solve the mystery and save his mother is with the help of the mirror box. But can he trust the phantom limb?
Author

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.