An Australian nurse discovers an effective new treatment for infantile paralysis, but experiences great difficulty in convincing doctors of the validity of her claims.

Rosalind Russell
as Elizabeth Kenny

Alexander Knox
as Dr. McDonnell

Dean Jagger
as Kevin Connors

Philip Merivale
as Dr. Brack

Beulah Bondi
as Mary Kenny

Charles Dingle
as Michael Kenny

John Litel
as Medical Director

Doreen McCann
as Dorrie

Fay Helm
as Mrs. McIntyre

Charles Kemper
as Mr. McIntyre