Synopsis by Hal Erickson
Sterling Holloway returns as eccentric scientist Uncle Oscar, who while trying to cook up a formula for flavored stamp glue ends up with a powerful explosive. Rather than write down the entire formula, Uncle Oscar teaches vital segments of the formula to his talking parakeet Schuyler. A pair of foreign spies steal Schuyler and substitute a lookalike, then kidnap Oscar and his niece Nancy (Allene Roberts) in order to steal the explosive. This looks like a job for Superman (George Reeves)--but it may also prove to be his undoing, inasmuch as the loquacious Schuyler is savvy to Superman's "Clark Kent" guise.