A key issue noted for First appearance of Dr. Tzin Tzin. Detective Comics #354 was published by DC Comics on August 1, 1966, as part of a series that began in 1937. Gardner Fox and Henry Boltinoff write, and art comes from Carmine Infantino, Joe Giella and John Waltrip. This 36-page issue features Batman, Dick Grayson, James Gordon, Elongated Man and Batman Who Laughs, among 7 characters cataloged on VerseDB.