Frank Gilbreth, en effektivitetsekspert, forsøger at anvende sin forskning på sine egne børn, 12 af dem!
Clifton Webb
Frank Gilbreth
Jeanne Crain
Ann Gilbreth
Myrna Loy
Lillian Gilbreth
Betty Lynn
Deborah Lancaster
Edgar Buchanan
Dr. Burton
Barbara Bates
Ernestine Gilbreth
Mildred Natwick
Mrs. Mebane
Sara Allgood
Mrs. Monahan
Betty Barker
Mary Gilbreth (uncredited)
Patti Brady
Martha Gilbreth (uncredited)
Teddy Driver
Dan Gilbreth (uncredited)
Jimmy Hunt
William Gilbreth (uncredited)
Roddy McCaskill
Jack Gilbreth (uncredited)
Carol Nugent
Lillie Gilbreth (uncredited)
