Comic Title: Detective Comics #18
Publisher: DC (Detective Comics, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: August 1938
Approx. On Sale Date: July 19, 1938 Copyright Date July 6, 1938
Source: Library of Congress, Periodicals 1938
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: Vincent A. Sullivan

Title: (In the Stratosphere)
Pages: 13

Feature(s):
Slam Bradley (of Earth-1)

Writer: Jerry Siegel
Artist: Joe Shuster

Feature Character(s)

• Slam Bradley (last appearance in Detective Comics #17; next appearance in Detective Comics #19)

Supporting Character(s)

• Shorty Morgan (last appearance in Detective Comics #17; next appearance in Detective Comics #19)

Villain(s)

• Knife Morley and his men (Nick named; no further appearances)
• Professor Barton (no further appearances)

Other Character(s)

• Sergeant Gage (last appearance in Detective Comics #16; no further appearances)
• Professor James and his daughter (no further appearances)

Comments:
This story was not originally titled.

Synopsis:
Slam and Shorty see a rocket ship land in a nearby field. When they investigate they are shot at by the girl piloting the ship. The girl takes off again, just as a car is pulling up. In the car, Professor Barton claims that the girl has stolen his rocket ship invention.

Slam and Shorty return with Barton to his lab. The professor captures them, believing they are working with the girl. While the professor questions them, Knife Morley and his men break into the lab, accompanied by the girl. The professor releases Slam to fight the crooks, while he escapes with the ship.

After the fight the girl explains that her father Professor James is the real inventor. Barton has now stolen the invention. Shorty has stowed away on the ship and is able to overcome Barton. The ship is then returned to its rightful owner, Professor James.