Fred MacMurray
Wilson Daniels
Jean Hagen
Freeda Daniels
Tommy Kirk
Wilby Daniels
Annette Funicello
Allison D'Allessio
Tim Considine
Buzz Miller
Kevin Corcoran
Moochie (Montgomery) Daniels
Cecil Kellaway
Professor Plumcutt
Alexander Scourby
Dr. Mikhail Andrassy
Roberta Shore
Franceska Andrassy
James Westerfield
Officer Hanson
Strother Martin
Thurm
Forrest Lewis
Officer Kelly
Ned Wever
FBI Chief E.P. Hackett
Gordon Jones
Captain Scanlon, Police Chief
Jacques Aubuchon
Stefano
Jack Albertson
Reporter (uncredited)