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