#28 The Mystery of the Deadly Double

By William Arden (Dennis Lynds), 1978
1981 Hitchcock cover PB. Adragna cover art.
1985 Keyhole PB.
1978 hardbound.  Herb Mott cover art.
Back to Original Series page.
Random House Hardbound Trade and GLB Editions

First Printed: 1978
Cover Art: Herb Mott
Internal Illustrations: Herb Mott
ISBN's: Trade Ed. 0-394-83902-1; GLB 0-394-93902-6

Trade & GLB Edition First Printing Identifier: 1234567890 numberline on the copyright page.

Other Hardbound Trade Edition First Printing Traits:
- Glossy cover finish
- Plain white endpapers
- Back cover lists to "The Mystery of the Deadly Double"

Notes: This was the last title to be published in a Hardbound Trade Edition and the last to feature internal illustrations.  Along with #24 and #27, this is one of the more difficult Hardbound Trade Edition titles to find.
Random House Revised Paperback Edition
"Keyhole Cover"

First Printed: 1985
Cover Art: Robert Adragna
Internal Illustrations: None
ISBN: 0-394-86428-X

First Printing Identifier: 1234567890 numberline on the copyright page.
Random House First Paperback Edition
"Hitchcock Cover"

First Printed: 1981
Cover Art: Robert Adragna
Internal Illustrations: None
ISBN: 0-394-84491-2

First Printing Identifier: 1234567890 numberline on the copyright page.

Notes: As with all of The Three Investigators paperback titles printed in 1981, this book can be found with the Mystery Quiz/Bookmark page attached inside the front or back cover.