Comic Title: Detective Comics #346
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: December 1965
On Sale Date: October 28, 1965 Copyright Date October 28, 1965
Source: Library of Congress, Periodicals 1965

Newsstand Date October 28, 1965
Source: House Ad, Batman #176, Page 28

Frequency: Monthly
Cover Price: $0.12
Page Count: 32
Editor: Julius Schwartz

Title: "Batman's Inescapable Doom-Trap"
Pages: 14

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

Writer: John Broome
Penciller: Sheldon Moldoff
Inker: Joe Giella

Reprinted In:
Showcase Presents:Batman Vol. 2 TPB (2007)
Batman:The TV Stories TPB (2014)

Feature Character(s)

• Batman (last appearance in Batman #177; next appearance in Justice League of America #41)

Supporting Character(s)

• Robin (last appearance in Batman #177; next appearance in Justice League of America #41)
• Commissioner Gordon (last appearance in Batman #177; next appearance in Batman #178)

Villain(s)

• Carnado (an escape artist; no further appearances)
• Eivol Ekdal (a trap designer; next appearance in Detective Comics #361)
• Two hired killers (no further appearances)

Synopsis:
World-famous escape artist Carnado steals 100,000 dollars to purchase a new trap from reknowned trap designer Eivol Ekdal. Eivol's new trap seems to be unescapable, so the two men decide to test it by letting Batman try to escape.

Carnado commits another robbery and alerts Batman, so that the Caped Crusader follows him. Batman falls into the trap and is challenged to escape. The walls are unbreakable plexi-glass, and the chamber fills with poisonous gas from an electrified vent in the floor. Batman uses his utility-belt buckle to create sparks along the vent. When combined with the gas, a powerful explosion results, which shatters the plexi-glass.

Carnado and Eivol escape while Batman recovers from the explosion, but the expect Batman to find them. They hire two killers to take out Batman, but when the Dynamic Duo arrives he deduces the presence of the killers and avoids his own murder. The crooks are then apprehended.