Comic Title: Adventure Comics #65
Publisher: DC (Detective Comics, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: August 1941
Approx. On Sale Date: July 1, 1941 Copyright Date July 2, 1941
Source: Library of Congress, Periodicals 1941
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: 64
Editor: Fredric Whitney Ellsworth

Title: (The Black Ray)
Pages: 8

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

Artist: Bernard Baily

Feature Character(s)

• Hourman (last appearance in All-Star Comics #6; next appearance in Adventure Comics #66)

Supporting Character(s)

• Mr. Bannerman (last appearance in Adventure Comics #63; next appearance in Adventure Comics #70)

Villain(s)

• Dr. Darrk (no further appearances)
• Butch and Nan (Darrk's henchmen; no further appearances)
• Giganto (Darrk's robot bodyguard; no further appearances)

Comments:
This story was not originally titled.

Synopsis:
Dr. Darrk has invented a black ray which renders objects invisible. After he uses the device for robbery, Rex Tyler delivers a shipment of chemicals to Darrk's laboratory and becomes suspicious. Rex is attacked by Darrk's henchmen, so he goes into action as Hourman. Darrk tries to stop Hourman uses a robot bodyguard, but Rex's Miraclo gives him the strength to prevail. Darrk then escapes under the cover of an invisible cloak. Hourman pursues and finally captures the scientist during the attempted robbery of an airplane carrying bonds.