The Hardy Boys: The Mystery of the Applegate Treasure

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