More alien monsters and another alien outlaw lead to an exciting story. Robin is kidnapped and replaced by the alien to hamper Batman.
Ramona Fradon is on AQUAMAN here--the OTHER great Silver Age artist on the feature.
Editors Jack Schiff and Murray Boltinoff apparently hated letter columns as they were among the last to implement them, preferring instead to devote their legally required text pages to filler that was skipped by most readers.