On February 25, 1957, the nude, badly bruised body of a young boy was found in a cardboard box in trash-strewn woods of north Philadelphia. Posters of the "Boy in the Box" soon dotted the city and police stations nationwide-to no avail. In November 1998 the remains were exhumed for DNA analysis, and the boy was reburied as "America's Unknown Child." The Boy in the Box is the first book to examine America's most famous unsolved case of child murder-one...