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Author Franklin W. Dixon
Country United States
Language English
Series Hardy Boys
Genre Detective, Mystery novel
Publisher Wanderer Books
Publication date
Media type Print (Paperback)
Pages 201 pp (first edition paperback)
ISBN 0-671-42357-6 (first edition paperback)
OCLC 7975365
LC Class PZ7.D644 Ti 1982
Preceded by The Billion Dollar Ransom
Followed by Trapped At Sea

Tic-Tac-Terror is the 74th title of the Hardy Boys series, written by Franklin W. Dixon.


In this book the Hardy boys (Frank and Joe) are asked to help stop a world-famous spy who works for the HAVOC, an international network of terrorists, wants to defect to the U.S. Frank and joe know the spy as "Igor”.

Also a million-dollar emerald from South America has vanished. Joe and Frank think “Igor” was involved. Their only clue is mysterious symbol in shape of tic-tac-toe. 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.