The Hardy Boys is an animated series, produced by Filmation and aired Saturday mornings on ABC in 1969. It featured the Hardy Boys, Joe and Frank, along with their friends Chubby Morton, Wanda Kay Breckenridge, and Pete Jones touring as a rock band while solving mysteries. The series is also notable for its opening and closing credits, which the Hardys appeared in live action. The series debuted at the same time as Hanna-Barbera's similarly themed Scooby-Doo, Where Are You!, which was scheduled against the show on CBS.
Footprints Under The Window / Hunting for Hidden Gold
Mystery of the Desert Giant / The Viking Symbol Mystery
The Secret of the Old Mill / The Missing Chums
The Secret Warning / The Mystery of the Aztec Warrior
The Mystery of Cabin Island / The Hidden Harbor Mystery
The Secret of the Caves / A Figure In Hiding
The Ghost at Skeleton Rock / The Mystery of the Chinese Junk
The Shore Road Mystery / The Sign of the Crooked Arrow
What Happened at Midnight / The Clue in the Embers
The Clue of the Screeching Owl / The Yellow Feather Mystery
The House on the Cliff / Mystery of the Spiral Bridge
The Mystery at Devil's Paw / The Haunted Fort
The Sinister Signpost / The Melted Coins
The Mark on the Door / The Flickering Torch Mystery
The Secret of Wildcat Swamp / The Clue of the Broken Blade
The Hooded Hawk Mystery / The Short Wave Mystery
The Phantom Freighter / The Secret of Pirates Hill