A medical researcher is sent to a plague outbreak, where he has to decide priorities for the use of a vaccine.
Ronald Colman
Dr. Martin Arrowsmith
Helen Hayes
Leora Tozer Arrowsmith
Richard Bennett
Gustav Sondelius
A.E. Anson
Professor Max Gottlieb
Clarence Brooks
Dr. Oliver Marchand
Alec B. Francis
Twyford
Claude King
Dr. Tubbs
Bert Roach
Bert Tozer
