Three children track their lost piano with one note missing through London.
Heather Bennett
Joan
Hennie Scott
Tom
John Moulder-Brown
Willie
Toke Townley
Mr. Parker
Vivian Lacey
Susie
Tommy Godfrey
Sam
Edgar Driver
Mr. Newbolt
Patricia Leslie
Mrs. Harris
R.S.M. Brittain
Commissionaire
Geoffrey Denton
Floorwalker
Derek Prentice
Stage manager
Michael Brandt
Director
Mary Cathcart Borer
Writer
Frank Wells
Henry Passmore
Producer
Hannah Russell
Music
Alan White
Director of Photography
John Glen
Editor
J. Elder Wills
Art Direction
Muriel Dickson
Wardrobe Designer