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A pictorial exploration of the British editions.

British editions of Tower Treasure

Our somewhat ambitious goal with this section of this website is to present high-quality cover scans of every single Hardy Boys book ever released by a British publisher, ranging from the vintage Harold Hill dust-jackets, to the numerous different Armada cover formats. We are confident that after several years of research we have located every variant that exists (bar one or two that may have slipped beneath our radar).

The Gallery contains a total of 196 titles, 57 omnibus editions and 6 boxed sets. Factoring in the multiple editions and formats for many of the novels (especially those from the original series), there are over 520 individual variants. The titles that were reissued and repackaged most often in the British series are The Clue of the Screeching Owl (8 separate variants and 1 omnibus edition) and The Sinister Sign Post (6 separate variants and 3 omnibus editions).

For every release featured on these pages, a selection of basic publication data is provided, including details of publisher, year of publication, ISBN or SBN (where applicable) and cover and interior illustrators (if known).

A selection of Hardy Boys covers from Great Britain


These many different titles fall naturally into the following six categories:

  • Original Series – 89 titles from the original Hardy Boys Mystery series, first published by Grosset & Dunlap and Simon & Schuster in the US.
  • Casefiles – The stories in the later spin-off series from Dead on Target to the un-released British version of Stress Point.
  • Be A Detective – The short series of six interactive novels co-written by Carolyn Keene.
  • Undercover Brothers – The recent series, which had a short run in the UK.
  • Miscellaneous – All of the various titles that don't belong to a particular series, such as Ghost Stories or Super Sleuths.
  • Omnibus Editions – All of the 3-in-1 and 2-in1 editions from both the Original and Casefiles series.
  • Boxed Sets – Various boxed sets released by Armada Books in the 1970s and 1980s, plus the Casefiles set from 2003.

Missing Scans

As of December 2011, there remains a single British cover we have been unable to track down: the Swift hardback edition of The Secret of the Knight's Sword. If anyone has scans or photographs of this edition, that they would like to contribute to the website, we would be delighted to hear from you.

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