Comic Title: Detective Comics #340
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: June 1965
On Sale Date: April 29, 1965 Newsstand Date April 29, 1965
Source: House Ad, Batman #172, Page 6

Copyright Date April 29, 1965
Source: Library of Congress, Periodicals 1965

Frequency: Monthly
Cover Price: $0.12
Page Count: 32
Editor: Julius Schwartz

Title: "The Outsider Strikes Again"
Pages: 15

Feature(s):
Batman (of Earth-1)

Writer: Gardner F. Fox
Penciller: Sheldon Moldoff
Inker: Joe Giella

Reprinted In:
Batman #255 (1974)
Showcase Presents Batman Vol. 1 TPB (2006)

Feature Character(s)

• Batman (last appearance in Batman #172; next appearance in Justice League of America #36)

Supporting Character(s)

• Robin (last appearance in Batman #172; next appearance in World's Finest Comics #150)
• Commissioner Gordon (last appearance in Batman #172; next appearance in Batman #173)
• Harriet Cooper (last appearance in Batman #170; next appearance in Batman #175)

Villain(s)

• Alfred Pennyworth (as the Outsider; last appearance in Detective Comics #336; next appearance in Detective Comics #349)
• Three unnamed henchmen (no further appearances)

Synopsis:
While tracking down a museum thief, Robin's batarang suddenly comes to life and attacks him. Batman's batrope also tries to strangle him. The Caped Crusaders escape from their weapons, which then turn to dust. They then receive a message from the Outsider claiming credit for making their weapons attack. Next he uses the Batmobile to try and kill the Dynamic Duo. Once again the crimefighters escape, and the Batmobile turns to dust.

Later at the Bat-Cave, Batman is attacked by more objects. He uses the dust of on his uniforms to interfere with the Outsider's signal which controls the objects. When Commissioner Gordon summons him to fight some crooks, Batman constructs a dust bomb. The crooks are agents of the Outsider using remote-controlled bullets. The dust bomb stops them, allowing Batman to apprehend the crooks.