"Ad-agency president Dan Edwards goes to Mexico to celebrate his nineteenth wedding anniversary and winds up getting divorced by mistake, whereupon his wife Valerie marries his best friend Ernie Brewer by mistake."
Frank Sinatra
as Dan Edwards
Deborah Kerr
as Valerie Edwards
Dean Martin
as Ernie Brewer
Cesar Romero
as Miguel Santos
Hermione Baddeley
as Jeannie MacPherson
Tony Bill
as Jim Blake
John McGiver
as Shad Nathan
Nancy Sinatra
as Tracy Edwards
Davey Davison
as Lisa Sterling
Michel Petit
as David Edwards
Trini López
as Trini López
Joi Lansing
as Lola
Darlene Lucht
as Bunny
Kathleen Freeman
as Miss Blight
Flip Mark
as Rollo
Sigrid Valdis
as Kitty
Karen Norris
as Assistant (uncredited)
Byron Foulger
as Mr. Bruno (uncredited)
Marie Gomez
as Lobby Senorita (uncredited)
DeForest Kelley
as Mr. Turner
Jack Donohue
Director
Nelson Riddle
Original Music Composer
Sam O'Steen
Editor
William H. Daniels
Director of Photography
Jean Burt Reilly
Hair Supervisor
William L. Kuehl
Set Decoration
Walter Plunkett
Costume Design
LeRoy Deane
Art Direction
Francis E. Stahl
Sound
Richard Lang
Assistant Director
Gordon Bau
Makeup Supervisor
Arthur Krams
Producer
Cy Howard
Writer