Detective Comics #140 (1948)

Detective Comics #140 is a comic book that you definitely want to add to your collection. It marks the first appearance and origin of The Riddler, aka the Prince of Puzzlers himself, Edward Nigma. This classic story, written by Bill Finger and illustrated by Dick Sprang, introduces us to a villain who is always trying to outsmart Batman.

But that's not the only great story in this issue. You'll also find Robotman's Double Trouble, where the android hero battles a nefarious scientist with a deadly robot army. And Dog for a Day, where Slam Bradley takes on a case to protect a valuable pooch from kidnappers.

And if you're into space travel, you'll love To the Moon and Back, a full text article that explores the possibility of traveling to the moon and other planets. Plus, The Dictator from Alcatraz follows the Boy Commandos and Rip Carter as they try to stop an evil dictator who is plotting to take over the world.

Overall, Detective Comics #140 is a must-have for any comic book collector. Not only does it feature the debut of one of Batman's most iconic villains, but it's also packed with other exciting stories that will keep you hooked. Trust us when we say that this is a comic book that you don't want to miss!