"A mischievous, adventuresome fourteen-year-old girl and her best friend begin following an eccentric concert pianist around New York City after she develops a crush on him."
Peter Sellers
as Henry Orient
Tippy Walker
as Valarie Campbell Boyd
Merrie Spaeth
as Marian 'Gil' Gilbert
Paula Prentiss
as Stella Dunnworthy
Angela Lansbury
as Isabel Boyd
Tom Bosley
as Frank Boyd
Phyllis Thaxter
as Mrs. Avis Gilbert
Bibi Osterwald
as Erica 'Boothy' Booth
John Fiedler
as Sidney
Fred Stewart
as Doctor
Al Lewis
as Store Owner
Peter Duchin
as Joe Daniels
Philippa Bevans
as Emma Hambler
Jerry Jarrett
as (as Jerry Jerrett)
Jane Buchanan
as Lillian Kafritz
Peter Turgeon
as Orchestra Member
William Hinnant
as
Colin Romoff
William LeMassena
as (as William Le Massena)
Claudia Morgan
as Drunk Woman at Christmas Party
George Roy Hill
Director
Nora Johnson
Screenplay
Nunnally Johnson
Jerome Hellman
Producer
Elmer Bernstein
Original Music Composer
Novel
Boris Kaufman
Director of Photography
Arthur J. Ornitz
Stuart Gilmore
Editor
Marion Dougherty
Casting
James W. Sullivan
Production Design
Jan Scott
Art Direction
Ken Krausgill
Set Decoration
Ann Roth
Costume Design
Ruth Deen
Script Supervisor
Sam Freed Jr.
Musician