Comic Title: Detective Comics #308
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: October 1962
On Sale Date: August 28, 1962 Copyright Date August 28, 1962
Source: Library of Congress, Periodicals 1962

Frequency: Monthly
Cover Price: $0.12
Page Count: 32
Editor: Jack Schiff

Title: "The Day John Jones Vanished"
Pages: 12

Feature(s):
Martian Manhunter (of Earth-1)

Artist: Joe Certa

Reprinted In:
Showcase Presents:Martian Manhunter Vol. 2 TPB (2009)

Feature Character(s)

• Martian Manhunter (last appearance in Detective Comics #307; next appearance in Justice League of America #15)

Supporting Character(s)

• Captain Harding (last appearance in Detective Comics #307; next appearance in Detective Comics #309)
• Diane Meade (last appearance in Detective Comics #307; next appearance in Detective Comics #309)

Villain(s)

• Baron Voto and his men (no further appearances)
• A bandit gang (no further appearances)

Other Character(s)

• King Leo of Lavonia and his guards (no further appearances)

Synopsis:
John Jones is assigned to return a valuable ring found in a police raid to the king of Lavonia. Lavonia is a medieval nation and is set up like it was 500 years in the past. John’s carriage is attacked by bandits soon after his arrival. John goes after them as the Martian Manhunter, but the ring has disappeared, even the bandits don’t have it.

While searching for the ring a strange lightning bolt trap J’onn in his martian form. The king believes John Jones took the ring, but J’onn learns it was Baron Voto. The ring possesses strange powers responsible for the lightning bolt which affected J’onn. J’onn defeats the baron and another blast from the ring restores his missing ability. John is then able to return the ring to the king.