Comic Title: Star Spangled Comics #10
Publisher: DC (Detective Comics, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: July 1942
Approx. On Sale Date: May 1, 1942 Copyright Date April 28, 1942
Source: Library of Congress, Periodicals 1942
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 Murder Master"
Pages: 10

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

Writer: Jerry Siegel
Penciller: Paul Cassidy
Inker: George Roussos

Feature Character(s)

• Robotman (last appearance in Star Spangled Comics #9; next appearance in Star Spangled Comics #11)

Supporting Character(s)

• Chuck Grayson (last appearance in Star Spangled Comics #9; next appearance in Star Spangled Comics #11)

Villain(s)

• The Murder Master (aka Carl Denton; no further appearances)
• A gang of unnamed crooks (no further appearances)

Synopsis:
Chuck Grayson suddenly begins trying to kill Paul Dennis, who is really Robotman. Robotman notices that Chuck seems to have been hypnotized, so he allows Chuck to think Paul is dead. Then Robotman follows Chuck back to a group of crooks, who tell him that the Murder Master is responsible for they hypnosis.

Robotman raids the Murder Master's laboratory, but falls victim to the hypnosis machine. The Murder Master orders Robotman to kill Paul. Since Robotman and Paul are one and the same, Robotman tries to kill himself.

While Robotman makes several unsuccessful attempts to kill himself, the Murder Master adjusts his hypnosis machine. In doing so the machine is briefly turned off, allowing Robotman to regain his senses. Before the Murder Master can restore the machine, Robotman returns to the lab and destroys it. He then takes the crook into custody.