The Hardy Boys: The Mystery of the Applegate Treasure (1956)

Tim Considine

Frank Hardy

Tommy Kirk

Joe Hardy

Florenz Ames

Silas Applegate

Russ Conway

Fenton Hardy

Sarah Selby

Aunt Gertrude

Robert Foulk

Jackley the Plumber

Carole Ann Campbell

Iola Morton

Donald MacDonald

Perry Robinson

Arthur Shields

Boles - Ex-Gardener

Charles Cane

Police Sergeant

Frances Morris

Landlady

Brick Sullivan

Policeman

Mort Mills

policeman

Don C. Harvey

Policeman

Dan Sturkie

Police Detective