Comic Title: Showcase #78
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: November 1968
On Sale Date: September 12, 1968 Copyright Date September 12, 1968
Source: Library of Congress, Periodicals 1968

Newsstand Date September 12, 1968
Source: Comic Reader, #68

Frequency: Monthly, with the exception of Jan., Mar., Apr., July and October
Cover Price: $0.12
Page Count: 32
Editor: Dick Giordano

Title: "Meet Jonny Double..."
Pages: 23

Feature(s):
Jonny Double (of Earth-1)

Plotter: Marv Wolfman
Scripter: Joe Gill
Artist: Jack Sparling

Feature Character(s)

• Jonny Double (first appearance; next appearance in Challengers of the Unknown #74)

Supporting Character(s)

• Lt. Branigan (Jonny's former boss; no further appearances)
• Sgt. Sandra Beach (Branigan's secretary; no further appearances)
• Crystal Cross (a waitress; no further appearances)

Villain(s)

• Members of the Syndicate (Louie named; no further appearances)

Other Character(s)

• Wilson Twain (Jonny's client; no further appearances)
• Fish-Eye (an informant; no further appearances)
• An unnamed landlord and door painter (no further appearances)

Synopsis:
Down-on-his-luck private investigator Jonny Double gets a case to help Wilson Twain, a financier who has received death threats from the synicate. Jonny begins questioning underworld informants and draws the attention of the criminals. After taking a beating, Jonny traces the crooks to businessmen Piker and Glass. He is spotted snooping in their office, and the crooks try to kill him. Jonny stays alive and defeats the crooks, leaving them for Lt. Branigan his former boss on the police force.