Whispering Walls

Whispering Walls is a mid-20th century mystery novel by Mildred A. Wirt, featuring the determined young reporter Penny Parker. The story follows Penny as she investigates the mysterious disappearance of bank president Hamilton Rhett, who vanishes along with a large sum of money. As she uncovers clues involving strange symbols and suspicious characters, Penny realizes that the case is more complex than it initially appears. This book is notable for its strong female lead and its contribution to juvenile detective fiction.