Comic Title: Batman #174
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: September 1965
On Sale Date: July 15, 1965 Copyright Date July 15, 1965
Source: Library of Congress, Periodicals 1965

Frequency: Monthly, with the exception of Jan., April, July and Oct.
Cover Price: $0.12
Page Count: 32
Editor: Julius Schwartz

Title: "The Off-Again On-Again Lightbulbs"
Pages: 12

Feature(s):
Batman (of Earth-1)

Writer: France E. Herron
Penciller: Sheldon Moldoff
Inker: Sid Greene

Reprinted In:
Showcase Presents Batman Vol. 1 TPB (2006)

Feature Character(s)

• Batman (last appearance in Batman #174; next appearance in Justice League of America #38)

Supporting Character(s)

• Robin (last appearance in Batman #174; next appearance in World's Finest Comics #152)
• Commissioner Gordon (last appearance in Detective Comics #342; next appearance in Batman #175)
• The Mystery Analysts of Gotham City (last appearance in Batman #168; next appearance in Batman #181)
• Martin Tellman (last appearance in Batman #168; next appearance in Batman #181)
• Art Saddows (last appearance in Batman #168; next appearance in Batman #181)
• Kaye Daye (last appearance in Batman #168; next appearance in Batman #181)
• District Attorney Danton (last appearance in Batman #168; next appearance in Batman #181)

Villain(s)

• Al Cutshaw and his men (no further appearances)
• A gang of unnamed crooks (no further appearances)

Synopsis:
Batman rushes to attend the Wednesday meeting of the Mystery Analysts. As the meeting begins, a cleaning man comes in to the room and announces that it is Friday. He shows the group a newspaper proving his claim. Before the Analysts can determine why they all believe it to be Wednesday, the cleaning man hypnotizes them.

The cleaning man orders the members to return to their homes for the evening and wait. Batman is unaffected by the hypnosis attacks the man. He defeats the crook and learns that the group was hypnotized on Wednesday to return of Friday. Batman avoided being hypnotized this time because he was wearing special contact lenses by accident. Batman then thwarts the crook's scheme to kill the other members with bombs planted at their houses.