Danger in the Fourth Dimension
While helping their father on an investigation at a science fiction theme park, Frank and Joe Hardy are horrified when their father is kidnapped, and soon they are drawn into the fight of their lives.
GenresBrothersFictionHardy boys (Fictitious characters)Mystery fictionChildren's storiesScience fiction
151 pages
English edition · First published 1993 by Pocket Books · ISBN 9780671793081
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