Issue: #354
Last valuation update: 2025-09-26
Batman discovers that the evil Dr. Tzin-Tzin is in Gotham City; he then uses Tzin-Tzin’s communicator to locate him.
First appearances: Dr. Tzin-Tzin
Creators: Carmine Infantino, Sheldon Moldoff, Gardner Fox, Joe Giella
Characters: Batman, Dick Grayson, James Gordon, Elongated Man, Sue Dibny, Dr. Tzin-Tzin