A fairly accurate historical account of Walter Reed's search for the cause of "Yellow Jack" or Yellow Fever and those who risked their lives in the pursuit.
Robert Montgomery
as John O'Hara
Virginia Bruce
as Frances Blake
Lewis Stone
as Maj. Walter Reed
Andy Devine
as Charlie Spill
Henry Hull
as Dr. Jesse Lazear
Charles Coburn
as Dr. Finlay
Buddy Ebsen
as Jellybeans
Henry O'Neill
as Gorgas
Janet Beecher
as Miss Macdade
William Henry
as Breen
Alan Curtis
as Brinkerhof
Sam Levene
as Busch
