"Two employees at a gift shop can barely stand one another, without realising that they are falling in love through the post as each other's anonymous pen pal."
Margaret Sullavan
as Klara Novak
James Stewart
as Alfred Kralik
Frank Morgan
as Hugo Matuschek
Joseph Schildkraut
as Ferencz Vadas
Sara Haden
as Flora
Felix Bressart
as Pirovitch
William Tracy
as Pepi Katona
Inez Courtney
as Ilona
Sarah Edwards
as Woman Customer
Edwin Maxwell
as Doctor
Charles Halton
as Detective
Charles Smith
as Rudy
Charles Arnt
as Policeman (uncredited)
Joan Blair
as Customer (uncredited)
Mary Carr
as Grandmother (uncredited)
Mabel Colcord
as Aunt Anna (uncredited)
Claire Du Brey
William Edmunds
as Waiter (uncredited)
Grace Hayle
as Plump Woman (uncredited)
Mira McKinney
Sol Murgi
as Restaurant Patron (uncredited)
Renie Riano
Gertrude Simpson
Ruth Warren
Ernst Lubitsch
Director
Samson Raphaelson
Screenplay
Miklós László
Theatre Play
Wade B. Rubottom
Art Direction
Arthur Rose
Unit Manager
Gene Ruggiero
Editor
Producer
Cedric Gibbons
Wally Heglin
Orchestrator
Edwin B. Willis
Set Decoration
Horace Hough
Assistant Director
William H. Daniels
Director of Photography
Sydney Guilaroff
Hairstylist
Werner R. Heymann
Original Music Composer
Ben Hecht
Additional Writing
Mentor Huebner
Production Illustrator
Douglas Shearer
Sound Director