Plot
Research chemist Barnaby Fulton works on a fountain of youth pill for a chemical company. One of the labs chimps gets loose in the laboratory and mixes chemicals, but then pours the mix into the water cooler. When trying one of his own samples, washed down with water from the cooler, Fulton begins to act just like a twenty-year-old and believes his potion is working. Soon his wife and boss are also behaving like children.
Trailer
Cast
Cary Grant
Barnaby Fulton
Ginger Rogers
Edwina Fulton
Charles Coburn
Oliver Oxley
Marilyn Monroe
Lois Laurel
Hugh Marlowe
Hank Entwhistle
Henri Letondal
Jerome Kitzel
Robert Cornthwaite
Dr. Zoldeck
Larry Keating
G.J. Culverly
Douglas Spencer
Dr. Brunner
Esther Dale
Mrs. Rhinelander
George Winslow
Little Indian
Marjorie Holliday
Oxley Receptionist (uncredited)
Harry Carey, Jr.
Reporter (uncredited)
Nico Minardos
Man at Pool (uncredited)
Charlotte Austin
Student (uncredited)
Harry Bartell
Scientist (uncredited)
Faire Binney
Dowager (uncredited)
Tex Brodus
Club Patron (uncredited)
Olive Carey
Johnny's Mother (uncredited)
Harry Carter
Scientist (uncredited)
Melinda Casey
Girl (uncredited)
Ronnie Clark
Boy (uncredited)
Russ Clark
Policeman (uncredited)
Heinie Conklin
House Painter (uncredited)
George Eldredge
Mr. Peabody (uncredited)
Kathleen Freeman
Mrs. Brannigan - Neighbor (uncredited)
Terry Goodman
Boy (uncredited)
Dabbs Greer
Cabbie (uncredited)
Howard Hawks
Man in Opening (voice) (uncredited)
George Hoagland
Club Patron (uncredited)
Perk Lazelle
Club Patron (uncredited)
Rudy Lee
Boy (uncredited)
Louis Lettieri
Boy (uncredited)
Mickey Little
Boy (uncredited)
Emmett Lynn
Gus (uncredited)
Paul Maxey
Board Member (uncredited)
John McKee
Photographer (uncredited)
Bill McLean
Bellboy (uncredited)
Joseph Mell
Barber (uncredited)
Christopher Milne
Johnny (uncredited)
Jonathan Milne
Johnny (uncredited)
Ray Montgomery
Policeman (uncredited)
Roger Moore
Bit (uncredited)
Brad Morrow
Boy (uncredited)
Forbes Murray
Board Member (uncredited)
Robert Nichols
Garage Man (uncredited)
Jerry Paris
Scientist (uncredited)
Maudie Prickett
Clerk (uncredited)
Jimmy Roebuck
Boy (uncredited)
Harry Seymour
Clothing Store Salesman (uncredited)
Jerry Sheldon
Joe (uncredited)
Olan Soule
Pickwick Arms Clerk (uncredited)
Gil Stratton
Yale Man (uncredited)
Ruth Warren
Laundress (uncredited)
Mack Williams
Board Member (uncredited)
Isabel Withers
Laundress (uncredited)
