The Secret (book)
Clues for where the treasures were buried are provided in a puzzle book named The Secret, produced by Byron Preiss and first published by Bantam in 1982. The book was authored by Sean Kelly and Ted Mann and illustrated by John Jude Palencar, John Pierard, and Overton Loyd; JoEllen Trilling, Ben Asen, and Alex Jay also contributed to the book. A Japanese version was published in 1983, and the English version was re-issued in 2014. The book contains 12 images and 12 verses; an image must be linked to a verse, with the information they contain used to locate a buried "treasure casque".
| Year | ISBN | Language | Format | Publisher |
|---|---|---|---|---|
| 1982 | ISBN 0-553-01408-0 | English | Paperback | Bantam |
| Hardcover | ||||
| 1983 | 0276-831122-7339 | Japanese | Paperback | Futami-shobo |
| 2014 | ISBN 978-1-59687-444-2 | English | Hardcover | ibooks.com |
| ISBN 978-1-59687-401-5 | Paperback |