After discovering a young boy aboard Thunderbird 2, Jeff tries to decide how to deal with the stowaway while his sons break protocol by enthralling him with tales of their past adventures.
Scott Tracy (voice)
Virgil Tracy (voice)
Alan Tracy (voice)
Gordon Tracy / Brains / Morrison / Bob Gray / Solarnaut Asher / Captain Hanson / Frank / Dave Clayton (voice)
Eddie Houseman / J.B. Lester / Colonel Harris / Fireflash Co-Pilot / Assistant Controller / Bridge Controller (voice)
Chip Morrison / Lady Penelope Creighton-Ward (voice)
Tin-Tin Kyrano (voice)
Solarnaut Camp (voice) (uncredited)
