Matt Hagen breaks jail again and uses his pool of protoplasm to renew his Clayface identity; Using his powers, Hagen is unstoppable, until Batman follows Hagen to the secret grotto, where the pool is located. Batman and Hagen start fighting and both of them fall into the pool, after which they are both transformed into clay; Batman uses his new powers to become a Clayface-Batman in order to fight Clayface on even terms; At the end of the fight, Batman defeats Clayface and returns him to prison. Images are of actual item. Please refer to these for further information. Has quite a few creases on front cover. Some marks at top left of front cover and across rear cover. The centre 2 pages have become detached from staples.
| Unit Of Sale | Single Unit |
| Tradition | US Comics |
| Cover Artist | Sheldon Moldoff |
| Series Title | Detective Comics |
| Universe | DC Universe |
| Publisher | DC Comics |
| Intended Audience | General Audience |
| Publication Year | 1963 |
| Type | Comic Book |
| Format | Single Issue |
| Language | English |
| Issue Number | 312 |
| Era | Silver Age (1956-69) |
| Style | Colour |
| Features | Boarded |
| Country Of Origin | United States |
Matt Hagen breaks jail again and uses his pool of protoplasm to renew his Clayface identity; Using his powers, Hagen is unstoppable, until Batman follows Hagen to the secret grotto, where the pool is located. Batman and Hagen start fighting and both of them fall into the pool, after which they are both transformed into clay; Batman uses his new powers to become a Clayface-Batman in order to fight Clayface on even terms; At the end of the fight, Batman defeats Clayface and returns him to prison. Images are of actual item. Please refer to these for further information. Has quite a few creases on front cover. Some marks at top left of front cover and across rear cover. The centre 2 pages have become detached from staples.