Detective Comics, #229

Published: March 1956

Cover

Detective Comics #229

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Issue Contents:
The 10,000 Secrets of Batman!
1 page superhero
Characters
  • Batman [Bruce Wayne]
  • Robin [Dick Grayson]
  • Mart Mathers
Credits
Davy to the Rescue!
Story 1 1 page
Credits
Story Notes

Inside front cover.

The 10,000 Secrets of Batman!
Story 2 12 pages superhero
Storyline

When the Caped Crusaders agree to allow a TV broadcast from the Bat-Cave, Batman discovers to his horror that his microfilm files have been stolen, something that could be of tremendous value to the criminal underworld.

Characters
  • Batman [Bruce Wayne]
  • Robin [Dick Grayson]
  • Commissioner James Gordon (cameo)
  • John Creeden (villain)
  • Mart Mathers (villain)
Credits
Story Notes

When reprinted in Batman Annual #1, this story was re-titled "Batman's Electronic Crime File."

Hot As a Firecracker!

Featuring Showcase

Story 3 1 page

Featuring The Batman Whirly-Word Game

Story 4 1 page superhero

"This helps some people out!"

Characters
  • Batman [Bruce Wayne]
Story Notes

puzzle

The Diamond Mine on Broadway
Story 5 6 pages detective-mystery
Characters
  • Roy Raymond
  • Karen
  • Joshua Maddern (villain)
Credits
Story 6 1 page humor

"It's your move now, Lefty!"

Characters
  • Casey the Cop
  • Lefty
Story 7 0 pages satire-parody
Healthy Teeth for You and Your Pet!
Story 8 1 page advocacy; teen
Characters
  • Binky
Credits
Sleuthing with Science
Story 9 2 pages adventure
Credits
The Phantom Bodyguard
Story 10 6 pages superhero
Storyline

Drexel Mansfield is convinced his business partner is trying to kill him, but Detective John Jones discovers the truth that Drexel has been trying to frame his partner.

Characters
  • Martian Manhunter [J'onn J'onzz
  • aka John Jones]
  • Captain Harding
  • Laurence Cowan (introduction)
  • Drexel Mansfield (villain, introduction)
Credits
Story Notes

Writer identification by Bob Hughes.

Story 11 1 page
Story 12 1 page
Story 13 1 page
Story Notes

Inside back cover.

Story 14 1 page
Story Notes

Back cover.