1. Footprints Under The Window / Hunting for Hidden Gold
0
30min
September 6, 1969
2. Mystery of the Desert Giant / The Viking Symbol Mystery
0
30min
September 13, 1969
3. The Secret of the Old Mill / The Missing Chums
0
30min
September 20, 1969
4. The Secret Warning / The Mystery of the Aztec Warrior
When their nocturnal search of the Applegate property is suddenly interrupted, the Hardys learn more about the mysterious treasure---and discover that they're not the only ones looking for it. Applegate: Florenz Ames. Iola: Carole Ann Campbell.
0
30min
September 27, 1969
5. The Mystery of Cabin Island / The Hidden Harbor Mystery
0
30min
October 4, 1969
6. The Secret of the Caves / A Figure In Hiding
0
30min
October 11, 1969
7. The Ghost at Skeleton Rock / The Mystery of the Chinese Junk
0
30min
October 18, 1969
8. The Shore Road Mystery / The Sign of the Crooked Arrow
0
30min
October 25, 1969
9. What Happened at Midnight / The Clue in the Embers
0
30min
November 1, 1969
10. The Clue of the Screeching Owl / The Yellow Feather Mystery
0
30min
November 8, 1969
11. The House on the Cliff / Mystery of the Spiral Bridge
0
30min
November 15, 1969
12. The Mystery at Devil's Paw / The Haunted Fort
0
30min
November 22, 1969
13. The Sinister Signpost / The Melted Coins
0
30min
November 29, 1969
14. The Mark on the Door / The Flickering Torch Mystery
0
30min
December 6, 1969
15. The Secret of Wildcat Swamp / The Clue of the Broken Blade
0
30min
December 13, 1969
16. The Hooded Hawk Mystery / The Short Wave Mystery
0
30min
December 20, 1969
17. The Phantom Freighter / The Secret of Pirates Hill