A mysterious group calling themselves the Black Snake Colony rents a cave on the property for strange rituals.
The mystery begins when Nancy and her friends, Bess Marvin and George Fayne, meet on a train ride home. Joanne explains that her grandmother is in danger of losing Red Gate Farm because they cannot afford the mortgage interest. To help, the trio decides to stay at the farm as paying boarders. The Secret of Red Gate Farm (Nancy Drew, Book 6)
Nancy discovers that the "cult" is actually a front for a counterfeiting operation (the Hale Syndicate) using the cave to hide equipment and fake money. A mysterious group calling themselves the Black Snake
A strange bottle of perfume from an "Oriental perfume shop" and a coded message found during a job interview lead Nancy toward the criminals. To help, the trio decides to stay at
The climax involves the girls disguising themselves in the cult's white robes and hoods to infiltrate a secret meeting in the cave. With help from and Federal agents, Nancy successfully unmasks the counterfeiters and saves the farm. Key Characters The Secret of Red Gate Farm (Nancy Drew, Book 6)
is the sixth volume in the iconic Nancy Drew Mystery Stories series. Originally published on September 1, 1931 , the book was written by Mildred Wirt Benson under the series' collective pseudonym, Carolyn Keene . Plot Summary