Random House Paperbacks
The keyhole edition got its start with
"Scar-Faced Beggar," being the first book
without Alfred Hitchcock. The emblem in the upper right
corner of the cover was changed from a silhouette of
Alfred Hitchcock to a keyhole with "The Three
Investigators" arranged in an oval around the emblem.
Random House made the decision that Alfred Hitchcock's
name should be purged from all the new printings of the
older books; consequently, all the stories were revised
in the mid 1980s to introduce the character of Hector
Sebastian (with the addition of Reginald Clarke in "Terror
Castle" only). In general, the typesetting for these
books was redone in its entirety, language was updated (for
example, Jupe refers to a puzzle as a "mind-blower"
instead of a "skull-buster"), and internal
illustrations were not included in any of the volumes.
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