Trade Edition First Printing Identifier: Lists to "The Secret of Skeleton Island" on the back cover.
Other Trade Edition First Printing Traits:
- Matte cover finish
- Blue graveyard endpapers
- No ISBN
Notes: The back cover of the First Printing lists the first book in the series as "The Mystery of Terror Castle".
Random House First Paperback Edition
"Marchesi Cover"
First Printed: 1978
Cover Art: Stephen Marchesi
Internal Illustrations: Harry Kane
ISBN: 0-394-83769-X
First Printing Identifier: 1234567890 numberline on the copyright page.
Notes: There were 9 Printings of this title with the Marchesi cover art in this edition. With the 10th Printing, below, the new Adragna cover art was used.
"Hitchcock Cover" Paperback
First Printed: circa 1982, 10th Printing
Cover Art: Robert Adragna
Internal Illustrations: Harry Kane
ISBN: Same as Marchesi Cover above.
Earliest Printing Identifier: 0 numberline on the copyright page.
Scholastic Book Services Paperback Edition
First Printed: September 1982
Cover Art: Charles Liese
Internal Illustrations: None
ISBN: 0-590-30325-2
First Printing Identifier: 12 11 10 9 8 7 6 5 4 3 2 1 numberline on the copyright page.
Random House Revised Paperback Edition
"Keyhole Cover"
First Printed: 1985
Cover Art: Robert Adragna
Internal Illustrations: None
ISBN: 0-394-86406-9
First Printing Identifier: 1234567890 numberline on the copyright page.
First Printing Identifier: 20 19 18 17 16 15 14 13 12 11 numberline on the copyright page.
Notes:
1.) Confusion Alert! This title is a continuation of the Revised "Keyhole" Paperback Edition but with new cover art and a new set of printings. The ISBN's are the same and the same printing plates were utilized.
2.) Confusion Alert! Random House also issued a hardbound library edition with the Dodge Covers. The ISBN found inside the hardbound edition is the same as that found in the paperback edition but the ISBN on the back cover is different: 0-613-12094-9
