Children are mysteriously going missing. Jo Baker and her friend Jean Simpson discover that a man at a fair is selling red balloons that children can inflate to such sizes that they are literally flying away on them. Jo is shocked to see that one of the latest children to fly away is her sister Lucy.
- Artist: E.C. Julien
- The Secret of the Red Balloons – Bunty: #615 (25 October 1969) – #629 (31 January 1970)