Comic Title: Adventures of Rex the Wonder Dog #18
Publisher: DC (National Comics Publications, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: Nov/Dec 1954
Approx. On Sale Date: September 3, 1954 Copyright Date September 1, 1954
Source: Library of Congress, Periodicals 1954
Until 1958 DC did not report actual on sale dates to the copyright office
The publication dates listed in LoC records are NOT release dates.

Frequency: Bi-monthly
Cover Price: $0.10
Page Count: 32
Editor: Julius Schwartz

Title: "The Secret of the Vanishing Island"
Pages: 10

Feature(s):
Rex the Wonder Dog (of Earth-1)

Writer: Robert Kanigher
Penciller: Gil Kane
Inker: Bernard Sachs

Feature Character(s)

• Rex the Wonder Dog (last appearance in Adventures of Rex the Wonder Dog #17; next appearance in Adventures of Rex the Wonder Dog #18)

Supporting Character(s)

• Danny Dennis (last appearance in Adventures of Rex the Wonder Dog #17; next appearance in Adventures of Rex the Wonder Dog #18)
• Major Dennis (last appearance in Adventures of Rex the Wonder Dog #17; next appearance in Adventures of Rex the Wonder Dog #19)

Villain(s)

• A gang of thieves (no further appearances)

Other Character(s)

• A group of native islanders (no further appearances)

Synopsis:
Danny and Rex join Major Dennis on a mapping expedition in the South Pacific. Their plane is forced to land on an island which sinks beneath the waves. They manage to escape the island in time and make their way to another island. There they befriend a group of island natives when Rex saves a boy from going over a waterfall.

The islanders explain that they are forced to pay tribute to an idol on the sinking island. Major Dennis, Danny, and Rex follow them to the island and expose a group of con men, who are using the island's sinking to prey upon the superstitious islanders. After having stopped the criminals, Major Dennis destroys the stone idol.