The Hardy Boys / Nancy Drew Mysteries - Season 1 - Eps 6: The Secret of the Whispering Walls
An unseen intruder breaks into the Drew home, stealing documents that will allow Nancy's aunts, Ruby and Lela, to sell their farm. While Nancy's father goes to the State Capitol to replace the papers, Nancy heads to the Farmhouse where she is plunged into a series of strange events that lead her deeper and deeper into danger.
About The Hardy Boys / Nancy Drew Mysteries

Title: The Hardy Boys / Nancy Drew Mysteries
First Air Date: 1977-01-30
Last Air Date: 1979-01-14
Status: Ended
Rating: 7/10 (from 26 votes)
Language: EN
Seasons: 3
Total Episodes: 46
Network: ABC
Genres: Mystery, Action & Adventure
Production Companies: Unknown
Synopsis
The Hardy Boys/Nancy Drew Mysteries is a television series which aired for three seasons on ABC. The series starred Parker Stevenson and Shaun Cassidy as amateur sleuth brothers Frank and Joe Hardy, respectively, and Pamela Sue Martin as girl detective Nancy Drew. The Hardy Boys/Nancy Drew Mysteries was unusual in that it often dealt with the characters individually, in an almost anthological style. That is, some episodes featured only the Hardy Boys and others only Nancy Drew.
Cast

Shaun Cassidy
Joe Hardy

Parker Stevenson
Frank Hardy