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
