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In this book the Frank and Joe Hardy are asked to investigate a mystery involving a world-famous spy from HAVOC, an international network of terrorists, who wants to defect to the U.S. Frank and Joe know the spy as "Igor”.
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254:. The game lead to a building that is run by the U.S. government. The building has a bomb and the Hardys are trapped in a deadly game of tic-tac-toe.
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from South
America has vanished. Joe and Frank think “Igor” was involved. Their only clue is mysterious symbol in shape of
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1445:Nancy Drew and the Hardy Boys Super Mystery Series
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234:. It was published by Wanderer Books in 1982.
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1497:The Hardy Boys & Nancy Drew Mysteries
1429:Nancy Drew & Hardy Boys Supermystery
1674:See guidelines for writing about novels
1607:See guidelines for writing about novels
1437:Hardy Boys and Tom Swift Ultra Thriller
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1547:Nancy Drew/Hardy Boys: Super Mystery
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1362:The Hardy Boys Detective Handbook
618:The Mystery of the Flying Express
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1002:The Submarine Caper/Deadly Chase
818:The Mystery of the Spiral Bridge
802:The Mystery of the Aztec Warrior
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117:201 pp (first edition paperback)
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1378:Hardy Boys: Undercover Brothers
1128:The Search for the Snow Leopard
882:The Clue of the Hissing Serpent
770:The Mystery of the Chinese Junk
1533:Last Train to Blue Moon Canyon
1421:Be a Detective Mystery Stories
1152:The Hunt for the Four Brothers
826:The Secret Agent on Flight 101
786:The Clue of the Screeching Owl
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16:1982 book by Franklin W. Dixon
1:
1743:1980s young adult novel stubs
690:The Secret of the Lost Tunnel
682:The Sign of the Crooked Arrow
257:
1666:. You can help Knowledge by
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938:Mystery of the Samurai Sword
674:The Secret of Skull Mountain
634:The Flickering Torch Mystery
626:The Clue of the Broken Blade
198:Children's literature portal
7:
1386:The Hardy Boys Secret Files
834:Mystery of the Whale Tattoo
778:Mystery of the Desert Giant
746:The Secret of Pirates' Hill
706:The Secret of Wildcat Swamp
554:Footprints Under the Window
522:The Mystery of Cabin Island
10:
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1645:
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1448:(2007-12, with Nancy Drew)
1432:(1988-98, with Nancy Drew)
1424:(1984-85, with Nancy Drew)
1256:The Dangerous Transmission
1144:The Caribbean Cruise Caper
762:The Mystery at Devil's Paw
754:The Ghost at Skeleton Rock
722:The Yellow Feather Mystery
482:The Secret of the Old Mill
1748:1980s mystery novel stubs
1540:The Creature of Kapu Cave
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1440:(1992-93, with Tom Swift)
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1394:The Hardy Boys Adventures
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1042:The Billion Dollar Ransom
970:Mystery of Smugglers Cove
922:The Sting of the Scorpion
842:The Arctic Patrol Mystery
794:The Viking Symbol Mystery
698:The Wailing Siren Mystery
570:The Hidden Harbor Mystery
538:What Happened at Midnight
530:The Great Airport Mystery
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1354:Other series and titles
1216:Past and Present Danger
858:Danger on Vampire Trail
730:The Hooded Hawk Mystery
514:The Secret of the Caves
498:Hunting for Hidden Gold
237:
1738:Novels about terrorism
1561:Treasure on the Tracks
1066:Game Plan for Disaster
1010:The Four-Headed Dragon
890:The Mysterious Caravan
738:The Clue in the Embers
650:The Short-Wave Mystery
610:The Disappearing Floor
546:While the Clock Ticked
506:The Shore Road Mystery
474:The House on the Cliff
246:Also a million-dollar
1733:1982 children's books
1658:This article about a
1591:This article about a
986:The Vanishing Thieves
930:Night of the Werewolf
898:The Witchmaster's Key
714:The Crisscross Shadow
666:The Phantom Freighter
578:The Sinister Signpost
399:George Edward Stanley
327:Stratemeyer Syndicate
1728:1982 American novels
1723:The Hardy Boys books
1232:The Castle Conundrum
1192:The End of the Trail
1184:Training for Trouble
874:The Shattered Helmet
850:The Bombay Boomerang
562:The Mark on the Door
1319:Countdown to Terror
1176:A Game Called Chaos
1120:Cross-Country Crime
1112:Crime in the Kennel
1104:Day of the Dinosaur
1026:Track of the Zombie
994:The Outlaw's Silver
954:The Apeman's Secret
914:The Firebird Rocket
389:Susan Wittig Albert
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1662:of the 1980s is a
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1555:The Tower Treasure
1370:The Clues Brothers
1240:Passport to Danger
1208:Crime in the Cards
1082:The Skyfire Puzzle
906:The Jungle Pyramid
594:The Secret Warning
586:A Figure in Hiding
466:The Tower Treasure
353:List of characters
337:Edward Stratemeyer
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1224:Trouble Times Two
1160:A Will to Survive
1090:Cast of Criminals
1074:The Crimson Flame
1018:The Infinity Clue
866:The Masked Monkey
490:The Missing Chums
404:James D. Lawrence
374:Andrew E. Svenson
332:Franklin W. Dixon
232:Franklin W. Dixon
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946:The Pentagon Spy
810:The Haunted Fort
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642:The Melted Coins
602:The Twisted Claw
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