The Secret of the Old Clock Book by Carolyn Keene

The Secret of the Old Clock is the first book in the Nancy Drew Mystery Stories series, written by Carolyn Keene and published in 1930. The book was rewritten in 1959 by Harriet Stratemeyer Adams. In the book, Nancy Drew accidentally discovers the mystery of Josiah Crowley's missing will while helping an injured child. Nancy begins searching for Crowley's missing antique clock, which may contain a clue to the will's location.