Sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. When an opportunity comes to help prove the new kid in town as ... See full summary »

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Series cast summary:
 Frank Hardy (19 episodes, 1956)
 Joe Hardy (19 episodes, 1956)
Florenz Ames ...
 Mr. Applegate (16 episodes, 1956)
 Fenton Hardy (15 episodes, 1956)
Sarah Selby ...
 Aunt Gertrude (15 episodes, 1956)
 Jackley (15 episodes, 1956)
Carole Ann Campbell ...
 Iola (14 episodes, 1956)
 Perry Robinson (10 episodes, 1956)
 Boles (9 episodes, 1956)


Sons of the great detective Fenton Hardy, Frank and Joe are eager to impress their father with their mystery solving skills. When an opportunity comes to help prove the new kid in town as innocent and find the long lost Applegate treasure, they jump on it. We follow the boys' case as they discover new twists and turns in the new case and in the mystery of the 10 year missing treasure.

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Family | Mystery





Release Date:

2 October 1956 (USA)  »

Company Credits

Production Co:

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Technical Specs

Sound Mix:

(RCA Sound Recording)

Aspect Ratio:

1.33 : 1
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Did You Know?


Referenced in Supernatural: Abandon All Hope (2009) See more »


Gold Doubloons and Pieces of Eight
Sung by Thurl Ravenscroft
See more »

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User Reviews

The Best of the MMC Serials
6 July 2006 | by (Kentucky) – See all my reviews

Disney's 16-episode serial "The Hardy Boys": "The Mystery of the Applegate Treasure" (1956) is based on Franklin W. Dixon's (aka Edward Stratemeyer) "The Tower Treasure"- the first of many "Hardy Boys" books. It was the first of two "Hardy Boy" serials produced by Disney (originally broadcast during October 1956) for its "Mickey Mouse Club" show; which was broadcast from 5PM-6PM each weekday. The one-hour show was broken into four segments with this sort of serial taking up one of these 15-minute segments The "Spin and Marty" serials were also used for this purpose.

As in the books, Frank (Tim Considine) and Joe (Tommy Kirk) are the teenage sons of Fenton Hardy (Russ Conway), a private detective. Following in their father's footsteps the two boys are looking for a pirate's treasure supposedly hidden in the Applegate Mansion in their neighborhood. The series has a cool theme song (see below). Despite the song there are no pieces of eight. They were one ounce Spanish silver coins, worth 8 reales, or half of a gold dubloon.

Frank and Joe are assisted by Joe's girlfriend Iola (Carole Ann Campbell) and hindered by their Aunt Gertrude who is looking after them while their father is out of town.

The Applegate mansion is a spooky looking house and when the boys finally meet the owner he confirms that there really is a treasure, given to his grandfather by LaFitte the pirate as repayment for when he burned the Applegate plantation. His grandfather hid the treasure and no one has been able to find it since.

The story has gold doubloons and crooks, and Iola gets a lot of scream queen moments. "Applegate's Treasure" was my personal favorite of all the MMC serials. The only drawback is that it was a rather complex mystery with a lot of misdirection, and having to watch it in a cliffhanger serial format was extremely frustrating. No sooner had they cleared up the suspense from the last episode than something would happen and they would break off- telling you tune in for the next episode. But we were hooked and faithfully tuned in day after day. A lot of family plans were altered during this time so as to not interfere with daily viewing.

Watching it now I was pleasantly surprised by the high quality of the performances by the child actors; especially Campbell and Kirk. The serial is definitely several notches above "Spin & Marty" in what was demanded of the cast, and for the most part they come through.

The DVD has some nice special features including a 2006 interview with Considine and Kirk in the Disney Studio where the serial was filmed. Also included is the entire (hour-long) MMC episode in which it premiered. It was a Monday, which was "Fun With Music Day", and Darlene does a lengthy song and dance number with Bobby.

Then again, what do I know? I'm only a child.

"Gold dubloons and pieces of eight, handed down to Applegate? From buccaneers who fought for years for gold dubloons and pieces of eight. Handed down in a pirate chest, the gold they sailed for east and west. The treasure bright that made men fight, till none were left to bury the chest. So now the gold and pieces of eight all belong to Applegate. The chest is here but where are those gold dubloons and pieces of eight?"

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