Comic Title: World's Finest Comics #128
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: September 1962
On Sale Date: July 19, 1962 Copyright Date July 19, 1962
Source: Library of Congress, Periodicals 1962

Frequency: Monthly, with the exception of January, April, July and October
Cover Price: $0.12
Page Count: 32
Editor: Jack Schiff

Title: "The Power That Transformed Batman"
Pages: 13

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

Writer: Jerry Coleman
Artist: Jim Mooney

Reprinted In:
Showcase Presents:World's Finest Vol. 2 TPB (2008)
Batman & Superman in World's Finest Comics:The Silver Age Omnibus Vol. 2 HC (2019)

Feature Character(s)

• Superman (last appearance in Superman's Pal, Jimmy Olsen #63; next appearance in Justice League of America #14)
• Batman (last appearance in Batman #150; next appearance in Justice League of America #14)

Supporting Character(s)

• Robin (last appearance in Batman #150; next appearance in Detective Comics #307)

Villain(s)

• Moose Morans, Silky Steve, Sparkles Garnet, and their gangs (no further appearances)

Synopsis:
Superman diverts a strange comet from Earth, but when he returns to Earth his vulnerability to Kryptonite is transferred to Batman. The Caped Crusader is transformed by Red Kryptonite into a menace, while the pair try to stop a trio of gang bosses. After knowledge of the transferrence has been made public, the crooks try to use it against the heroes, but Superman and Batman prevail, having switch identities to fool the thieves. Eventually the effects of the comet fade, restoring both Superman and Batman to normal.