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| Publisher |
DC |
| Series |
Superboy |
| Published | July 1968 |
| Artist |
Bob Brown |
| Writer |
Frank Robbins |
| Inker |
Jack Abel |
| Cover Artist |
Neal Adams |
Mr. Cipher, who is a robot with a bomb inside, demands to "live" with the Kents and holds them hostage. He's armed with Kryptonite and has already attacked a dam. Worse yet, another Cipher robot has invaded Lana Lang's house. Can Superboy find out who is behind these evil robots and diffuse the bombs?