Trama:
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.

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

Kathleen Freeman Mrs. Brannigan (uncredited)

Marjorie Holliday

Harry Carey, Jr. Reporter (uncredited)

Supporto: Sconosciuto,

In prestito: No

Rapporto: Unknown