TV The Hardy Boys - Season 1 Episode 1 : The Mystery Of The Applegate Treasure : An Introduction The Hardy Boys - Season 1 Episode 1 : The Mystery Of The Applegate Treasure : An Introduction 8.8/10 by 4 users Frank and Joe Hardy introduce their new mystery. Details Casts Posters Images Title The Hardy Boys - Season 1 Episode 1 : The Mystery Of The Applegate Treasure : An Introduction Alternative Titles First Air Date 1956-09-21 Last Air Date 1957-12-20 Number of Episodes 35 Number of Seasons 2 Genres Kids, Mystery, Networks , Casts Tim Considine, Tommy Kirk, Russ Conway, Sarah Selby, Carole Ann Campbell, Andy Clyde, John Baer, Hugh Sanders Plot Keywords , Frank Hardy Tim Considine Joe Hardy Tommy Kirk Fenton Hardy Russ Conway Aunt Gertrude Hardy Sarah Selby Iola Morton Carole Ann Campbell Lacey Andy Clyde Eric John Baer Mr. Binks Hugh Sanders Episodes List The Hardy Boys Season 1 :Episode 1 The Mystery Of The Applegate Treasure : An Introduction The Mystery Of The Applegate Treasure : An Introduction 1956-09-21 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 2 The Stranger The Stranger 1956-09-28 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 3 A Real Case A Real Case 1956-10-05 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 4 The First Clue The First Clue 1956-10-12 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 5 The Fugitive The Fugitive 1956-10-19 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 6 Applegate's Gold Applegate's Gold 1956-10-26 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 7 Dig For Treasure Dig For Treasure 1956-11-02 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 8 A Pirates Chest A Pirates Chest 1956-11-09 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 9 Boys In Trouble Boys In Trouble 1956-11-16 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 10 Female Detective Female Detective 1956-11-23 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 11 Iola's Bravery Iola's Bravery 1956-11-30 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 12 Footsteps In the Tower Footsteps In the Tower 1956-12-07 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 13 The Prisoner Speaks The Prisoner Speaks 1956-12-14 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 14 Strange Confession Strange Confession 1956-12-21 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 15 A Golden Clue A Golden Clue 1956-12-28 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 16 The Final Search The Final Search 1957-01-04 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 17 The Tower Secret The Tower Secret 1957-01-11 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 18 Never Say Die Never Say Die 1957-01-18 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 19 Boy's In Danger Boy's In Danger 1957-01-25 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. The Hardy Boys Season 1 :Episode 20 The Tower-Treasure The Tower-Treasure 1957-02-01 The sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills.