Comic Title: Detective Comics #312
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: February 1963
On Sale Date: December 27, 1962 Newsstand Date December 27, 1962
Source: House Ad, World's Finest Comics #131, Page 13

Newsstand Date December 27, 1962
Source: Newsdealer Magazine, V17 #11

Copyright Date December 27, 1962
Source: Library of Congress, Periodicals 1963

Frequency: Monthly
Cover Price: $0.12
Page Count: 32
Circulation: 265000
Editor: Jack Schiff

Title: "The Secret of Clayface's Power"
Pages: 13

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

Writer: Bill Finger
Penciller: Sheldon Moldoff
Inker: Charles Paris

Feature Character(s)

• Batman (last appearance in Justice League of America #17; next appearance in Batman #154)

Supporting Character(s)

• Robin (last appearance in World's Finest Comics #131; next appearance in Batman #154)
• Commissioner Gordon (last appearance in Batman #153; next appearance in Batman #154)

Villain(s)

• Clayface (last appearance in Detective Comics #304; next appearance in Batman #159)
• Eddie Leeds (Clay-Face’s hireling; no further appearances)

Other Character(s)

• The manager of a Gotham City bank and Mrs. Vanderhoeft (an art collector; no further appearances)

Synopsis:
Matt Hagen escapes from jail and restores his Clay-Face powers. Batman catches up to the crook, but the transformation powers of Clay-Face are too powerful for Batman to contain. After their next encounter, Batman follows the crook to the magic pool, which Clay-Face uses to renew his powers. Batman falls into the pool himself and gains the powers of Clay-Face. He is then able to defeat Hagen and return him to prison. Batman then destroys the entrance to the pool, but unknown to Batman, Hagen has hidden a bottle of the liquid in a secret spot to be used again.