Comic Title: Detective Comics #138
Publisher: DC (National Comics Publications, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: August 1948
Approx. On Sale Date: June 23, 1948 Copyright Date June 21, 1948
Source: Library of Congress, Periodicals 1948
Until 1958 DC did not report actual on sale dates to the copyright office
The publication dates listed in LoC records are NOT release dates.

Frequency: Monthly
Cover Price: $0.10
Page Count: 48
Editor: Jack Schiff

Title: "The Invisible Crimes"
Pages: 12

Feature(s):
Batman (of Earth-2)

Writer: Bill Finger
Artist: Dick Sprang

Reprinted In:
Batman Archives Vol. 7 HC (2008)
Batman:The Golden Age Omnibus Vol. 6 HC (2019)

Feature Character(s)

• Batman (last appearance in Batman #48; next appearance in Detective Comics #139)

Supporting Character(s)

• Robin (last appearance in Batman #48; next appearance in Star Spangled Comics #84)

Villain(s)

• Joker (last appearance in Detective Comics #137; next appearance in Batman #50)
• Joker's gang (no further appearances)

Other Character(s)

• Walter Timmins (a scientist; no further appearances)
• Monty Laird, Stacy, and Morse (Joker's victims; no further appearances)

Synopsis:
The Joker kidnaps a scientist responsible for inventing an invisibility formula. Joker drinks the formula and becomes invisible. He then sets out on a series of crimes. While the Joker remains invisible, his loot is not making it difficult to get away.

Joker then comes up with a new plan of blackmail. He threatens to ruin several businesses with invisible pranks unless he is paid. Although Batman tries to stop him, Joker's invisibility gives him the advantage. To counter Joker's edge, Batman also takes the invisibility formula. Then the invisible foes battle it out with Batman prevailing. The invisibility eventually wears off, and Joker is put in jail.