Secret of the Old Clock
Author: first_name: Mildred A. Wirt
last_name: Benson
Language: English
Year: 1930

In the first book of the series, intrepid teenage sleuth, Nancy Drew, searches for the true will of the late Josiah Crowley, a wealthy businessman from Nancy's hometown of River Heights.  In an effort to help Josiah's impoverished relatives, Nancy risks her own safety to track the clues that will solve the mystery.  

The Secret of the Old Clock was written by Mildred Wirt Benson using the pseudonym Carolyn Keene.  - Summary by Louise Jaeschke