In the early 1900s, as the Panama Canal is being built, a group of doctors try to discover a cure for yellow fever, a disease that is decimating the workers constructing the canal.

Ian Keith
Dr. Julian Murray

Tala Birell
Dr. Sterne

Ferdinand Gottschalk
Dr. Fontaine

Suzanne Kaaren
Gloria Blank
Lionel Pape
Dr. Travis

Rollo Lloyd
The Colonel

Teru Shimada
Dr. Nogi

Nigel De Brulier
Father Gonzales
Nina Campana
Maria

Warner Richmond
Burke